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Methods and apparatus for processing error control messages in wireless communication system

A technology of wireless communication equipment and wireless communication system, which is applied in the field of error control message processing, and can solve problems such as receiver status expiration, status report transmission delay, etc.

Active Publication Date: 2014-04-09
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the transmission of the status report may be delayed to such an extent that the state of the receiver represented by the status report may be out of date even before the status report is sent

Method used

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  • Methods and apparatus for processing error control messages in wireless communication system
  • Methods and apparatus for processing error control messages in wireless communication system
  • Methods and apparatus for processing error control messages in wireless communication system

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Embodiment Construction

[0022] figure 1 A simplified view of a communication system 10 including a sending node 110 and a receiving node 120 is provided. As mentioned above, both the sending node 110 and the receiving node 120 comprise a complete transceiver; the terms "send" and "receive" are used to describe specific endpoints in the transmission of acknowledgment data. Thus, sending node 110 sends one or more data units (which may include protocol data units (PDUs)) to receiving node 120, and may also send one or more error control messages, such as polling requests. (As discussed below, error control messages (such as polls) may be included in the same protocol data unit as traffic data.) Receiving node 120 may then send one or more error control messages, such as status reports, or retransmissions. A request for a PDU that was not successfully received.

[0023] In some embodiments of the present invention, the transmitting node 110 may comprise an LTE eNodeB, and the receiving node 120 may co...

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PUM

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Abstract

Methods and apparatus for processing error control messages, such as RLC ARQ control messages, are disclosed. An exemplary method comprises signaling a medium access controller (MAC) that link resources are needed for transmitting data, receiving an indication from the MAC that link resources for transmitting the data are scheduled, and generating an error control message after receiving said indication, based on a current error control status. The error control message is then forwarded to the MAC for transmission. Because the generation of an error control message is delayed until resources for its transmission are scheduled, the queuing of stale control messages is avoided.

Description

technical field [0001] The present invention relates generally to wireless communication systems, and more particularly to the handling of error control messages in wireless systems that schedule link resources. Background technique [0002] The 3rd Generation Partnership Project (3GPP) has initiated a project to develop specifications for advanced wireless communication systems in a proposal known as "Long Term Evolution" or LTE. In standardization discussions, it has been agreed that an LTE system should utilize an Automatic Repeat Request (ARQ) mechanism in a Radio Link Control (RLC) protocol. The ARQ protocol as specified is a selective repetition protocol (used in "RLC Acknowledged Mode") that provides means for sending status reports from receiving nodes to sending nodes, and for sending nodes to poll receiving nodes for status s method. In response to receipt of the status report, the sending node may retransmit any lost data, or take other suitable action. In resp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04W28/04H04L1/16
CPCH04L1/1685H04W28/04H04L1/1854
Inventor 马茨·萨戈弗斯约翰·特斯纳
Owner TELEFON AB LM ERICSSON (PUBL)