Method and device for selecting enhanced transport format combination

Abstract

The invention provides a method and a device for selecting an enhanced transport format combination. The method comprises the following steps of: determining the size of a transport block of an enhanced dedicated channel (E-DCH) according to an authorization resource when a high speed uplink packet access (HSUPA) service is established; counting acknowledgement indicators received by an E-HICH in the process of the HSUPA service and adjusting the size of the transport block of the E-DCH according to a counting result; and redetermining the size of the transport block according to the changed authorization resource when the authorization resource changes in the process of the HSUPA service. The method and the device can effectively improve the effective data transmission rate of the HSUPA service.

Description

technical field [0001] The invention relates to the field of communication, in particular to a method and device for selecting Enhanced Transport Format Combination (E-TFC). Background technique [0002] According to the existing protocol, when a terminal selects E-TFC, the factors that determine the transport block size of the Enhanced Dedicated Channel (E-DCH) include: the terminal level, the maximum and minimum code rates configured by the network, and the Enhanced Uplink Physical Channel (E-DCH). The power on the PUCH) meets the authorized power allocated by the network and the total transmit power of the terminal is within the allowable range. [0003] Usually, the terminal level and the maximum and minimum code rates are determined, and the total transmission power of the terminal is also less than the maximum transmission power limit. Therefore, in most cases, the selection process of E-TFC is uniquely determined by the authorized resources. If the authorized resourc...

AI Technical Summary

Problems solved by technology

If the authorized resources allocated by the network are not adjusted in real time according to the wireless environment, it will affect the performance of the High Speed ​​Uplink Packet Access (HSUPA) service. For example, if the network allocates a larger authorized power, the terminal will choose a larger transmission block. But in fact, the network reception effect may be poor, reflected in the Enhanced Dedicated Channel Hybrid Automatic Repeat Request Acknowledgment Indicator Channel (E-HICH) is a high proportion of false acknowledgment indications (NACK), and the actual data transmission rate will be greatly reduced

In addition, when the coverage of the network is unbalanced, the fast closed-loop power control of the NodeB on the E-DCH may fail, which will cause a large number of E-DCH misinterpretations and greatly reduce the actual data transmission rate.

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