Method and apparatus for generating radio link control protocol data units

Abstract

A method and apparatus are used to generate radio link control (RLC) protocol data units (PDUs). A data request for a logical channel is received as part of an enhanced dedicated channel (E-DCH) transport format combination (E-TFC) selection procedure in a medium access control (MAC). Upon determining the data field size, an RLC PDU is generated such that it matches the requested data from the E-TFC selection. The size of the RLC PDU generated can be greater than or equal to the minimum configured RLC PDU size (if data is available) and less than or equal to the maximum RLC PDU size. The datais then transmitted in the RLC PDU in a current transmission time interval (TTI).

Description

technical field This application relates to wireless communications. Background technique The 3rd Generation Partnership Project (3GPP) is a collaboration among telecommunication union organizations to realize globally applicable third generation (3G) wireless communication systems. Figure 1 is an overview of the system architecture of a conventional Universal Mobile Telecommunications System (UMTS) network. The UMTS network architecture includes a Core Network (CN), a UMTS Terrestrial Radio Access Network (UTRAN), and at least one User Equipment (UE). CN is interactively connected with UTRAN through Iu interface. The UTRAN is configured to provide wireless telecommunication services to UEs, referred to as Wireless Transmit / Receive Units (WTRUs) in this application, over the Uu radio interface. A common air interface defined in the UMTS standard is Wideband Code Division Multiple Access (W-CDMA). The UTRAN includes one or more Radio Network Controllers (RNCs) and base ...

AI Technical Summary

Problems solved by technology

Since the radio knows that RLC produces large RLC PDUs when there is a large E-TFC selection, there is a problem when large RLC PDUs need to be retransmitted and the size of the E-TFC selection

In addition, the retransmission of large RLC PDUs needs to generate a large number of MAC segments

Therefore, residual HARQ errors lead to an increase in the RLC PDU error rate

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