Method for realizing uplink transmission time maintenance by mobile terminal in third-generation mobile communication system
A mobile communication system and mobile terminal technology, which is applied in the field of uplink transmission time maintenance of mobile terminals in the third generation mobile communication system, to achieve the effects of ensuring continuity, wide application range and stable link
Active Publication Date: 2013-09-11
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology
However, there are no clear regulations on how to select a new reference cell in the remaining cells after the release of the UE reference cell and how to maintain a time relationship between the uplink and downlink time as the basis for the new adjustment of the transmission time.
Method used
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[0056] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.
[0057] see image 3 As shown, the present invention essentially relates to a method for maintaining uplink transmission time on the mobile terminal side in a WCDMA FDD (frequency division duplex) system, a method for maintaining uplink transmission time by a mobile terminal in the third generation mobile communication system , which includes the following steps:
[0058] (1) The mobile terminal performs initial wireless link establishment processing;
[0059] (2) The mobile terminal regards the only cell where the wireless link is established as the reference cell, and uses the system preset sending / receiving time difference as the target sending / receiving time difference parameter of the wireless link;
[0060] (3) The mobile terminal continuously detects whether a multipath search result update or an active set update process occurs;
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The invention relates to a method for realizing uplink transmission time maintenance by a mobile terminal in a third-generation mobile communication system, which comprises that: the mobile terminal performs quality assessment processing on a current reference cell in a multi-path searching result updating or active set updating process after the removal of an initial reference cell, keeps unchanged the reference cell and a target transmission / receiving time difference parameter if the current reference cell passes the quality assessment, performs the quality assessment processing on other cells in an active set if the current reference cell does not pass the quality assessment, and selects the cell passing the quality assessment to perform updating processing on the reference cell and the target transmission / receiving time difference parameter. By the method for realizing the uplink transmission time maintenance by the mobile terminal in the third-generation mobile communication system, the link quality and mobile continuity of the mobile terminal are ensured, a connected link is stable, the mobile terminal has higher quality of service, stable and reliable working performance and a wide application range, and a solid foundation is laid for the further development of a third-generation mobile communication technology.
Description
technical field [0001] The present invention relates to the field of mobile communication, in particular to the technical field of the third generation mobile communication system, and specifically refers to a method for maintaining the uplink transmission time of a mobile terminal in the third generation mobile communication system. Background technique [0002] In the third generation mobile communication system, especially the WCDMA mobile communication system, the time scheduling relationship is used to realize the synchronous scheduling of dedicated channels. The time relationship here refers to the time interval between transmission blocks, and the minimum interval is one frame. The concept of a frame is a processing unit with a duration of 10 milliseconds in the WCDMA system, and a frame is divided into 15 time slots or 38400 chips. On the mobile terminal (UE) side, the sending time of all uplink dedicated channels can be determined by the relative time interval with...
Claims
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IPC IPC(8): H04W24/04H04W76/02H04B7/26
Inventor 罗宗潮程迎辉
Owner SPREADTRUM COMM (SHANGHAI) CO LTD