Transport format combination selection method and device

A transmission format combination and combined transmission technology, applied in wireless communication, power management, electrical components, etc., can solve problems such as call drop, link out of sync, data decoding error, etc., and achieve the effect of improving anti-interference ability and performance

Inactive Publication Date: 2010-08-18
ST ERICSSON SEMICON BEIJING
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Problems solved by technology

In the prior art, when selecting the combination of transmission formats, the power capability of the transmitting end is not considered. However, the Code Division Multiple Access (CDMA) system is an interference-limited system, and the power of the transmitting end is always limited. When the transmitting power of a CCTrCH reaches When the maximum transmission power is limited, the adjustment of the closed-loop power control system at the receiving e

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  • Transport format combination selection method and device
  • Transport format combination selection method and device
  • Transport format combination selection method and device

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[0054] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0055] Reference figure 1 , The transmission format combination selection method of the embodiment of the present invention includes the following steps:

[0056] Step 101: Calculate the bit rate metric value of each transmission format combination in the transmission format combination set corresponding to the current coding combination transmission channel;

[0057] There are multiple characterization modes for the bit rate metric value of the transmission format combination. The embodiment of the present invention provides the following two characterization modes:

[0058] (1) The bit rate measurement value is the number of bits transmitted in a wireless frame (10ms) by the transmission format combination, specifically:

[0059] BitNumFrm j =...

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Abstract

The invention provides a transport format combination selection method and device. The method includes that: bit rate metric value of each transport format combination in a transport format combination set corresponding to the current coding combination transmission channel is calculated; maximum and minimum transport format combinations in the transport format combination set are determined; whether transport format combination is required to be reselected is judged according to average transmitted power of the current transport format combination in the maximum transmission time interval, available transmitted power and the maximum and minimum transport format combinations; when transport format combination is determined to be reselected, a transport format combination subset is determined according to the bit rate metric value of the current transport format combination; and the current transport format combination is reselected from the transport format combination subset according to data volume to be transmitted by radio link control layer and priority of logical channel. The invention can effectively improve antijamming capability of link.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a method and a device for selecting a transmission format combination. Background technique [0002] Compared with the 2G wireless access system, 3GPP has added a new concept in its 3G wireless access system, that is, coded combined transport channel (CCTrCH), which is composed of multiple transport channels (TrCH). Each transport channel contains multiple transport formats (TFs). In one CCTrCH, various transport formats of each transport channel are combined into a Transport Format Combination Set (TFCS) according to the agreed relationship. When sending data to the air interface, the sending end needs to select a transport format combination (TFC) in the transport format combination set to control the effective data rate of each transmission channel in the air interface. [0003] 3GPP 25.321 defines the processing flow of transport format combination selection...

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Application Information

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IPC IPC(8): H04W52/08H04W52/54
Inventor 杨文学
Owner ST ERICSSON SEMICON BEIJING
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