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Method and apparatus for polling in a wireless communication system

A polling, wireless link technology, applied in the direction of error prevention/detection using return channel, can solve problems such as PDU waste

Inactive Publication Date: 2010-01-27
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While retransmitting complete PDUs may be a satisfactory solution for moderately sized PDUs, retransmitting large PDUs may become a waste in newer systems

Method used

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  • Method and apparatus for polling in a wireless communication system
  • Method and apparatus for polling in a wireless communication system
  • Method and apparatus for polling in a wireless communication system

Examples

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Embodiment Construction

[0031]A data packet communication system employs radio link control (RLC) transmission with an automatic repeat request (ARQ) setting between the transmitter and receiver, thereby enabling the receiver to polling. Once a polling event occurs, for example, the transmitter's transmit buffer is empty, the polling timer expires, the RLC protocol data unit (PDU) count threshold is reached, or a threshold number of outstanding transmit bytes is reached, the transmitter will take turns. query command is sent to the receiver. The poll command can be smaller than any RLC PDU. In an illustrative aspect, the polling command may be a Status PDU sent from the access node, which includes a Super Field (SUFI) for polling. The polling command may be a polling PDU as a dedicated control command. Polling commands can be degenerate RLC PDUs sized to completely eliminate data. Thus, the use of the poll command avoids the problem of using the conventional approach of retransmitting the complet...

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PUM

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Abstract

A data packet communication system employs radio link control (RLC) transmission between a transmitter and a receiver with an Automatic Repeat Request (ARQ) arrangement whereby polling of the receiver is accomplished with reduced amount of redundantly transmitted data, such as between an access node and terminal. Upon a polling event, such as emptying of a transmission buffer of the transmitter, expiration of a polling timer, or reaching a radio link control (RLC) protocol data units (PDUs) count threshold, the transmitter sends a polling command to the receiver. This polling command is smaller than any of the RLC PDUs, which are conventionally resent with a polling bit set to evoke a STATUS PDU from the receiver. With evolving communication standards tending toward larger PDUs, such as in excess of a kilobyte for HSPA+ (High-Speed Packet Access Evolution) and 3GPP LTE (Long Term Evolution), this inefficiency can be of increasing impact.

Description

[0001] Priority claims under 35 U.S.C. §119 [0002] This application for patent claims priority to Provisional Application No. 60 / 895,394, filed March 16, 2007, entitled "METHOD ANDAPPARATUS FOR POLLING IN A WIRELESS COMMUNICATION SYSTEM," which is assigned to the assignee of this application, hereby It is expressly incorporated herein by reference. This patent application claims priority to Provisional Application No. 60 / 895,451, filed March 17, 2007, entitled "METHOD AND APPARATUS FOR POLLING IN AWIRELESS COMMUNICATION SYSTEM," which is assigned to the assignee of this application, It is hereby expressly incorporated herein by reference. technical field [0003] The present application relates to the transmission of data packets from a transmitter to a receiver using a radio access network for reliable acknowledged communication. Background technique [0004] Layer 2 specifications of the 3GPP (Third Generation Partnership Project) specification series characterize an A...

Claims

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Application Information

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IPC IPC(8): H04L1/16H04L1/18
Inventor A·梅朗S·Y·D·何E·F·沙蓬尼尔
Owner QUALCOMM INC
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