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A method of uplink transmission in a mobile terminal in soft handover

A mobile terminal and link transmission technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as not receiving scheduling information

Active Publication Date: 2011-03-09
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the terminal characteristic is to stop transmission as soon as one of the Node Bs acknowledges reception, there is a risk that the scheduling node B(s) does not receive the Scheduling Information Included

Method used

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  • A method of uplink transmission in a mobile terminal in soft handover
  • A method of uplink transmission in a mobile terminal in soft handover
  • A method of uplink transmission in a mobile terminal in soft handover

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Embodiment Construction

[0025] Signaling the information in the header intended for Node B to the transport data block in soft handover is a new concept of the 3GPP standard, as with HARQ in the uplink, so the problem with HARQ using enhanced dedicated channels has so far been Not considered.

[0026] The invention modifies the UE characteristics such that the characteristic of receiving acknowledgments of received blocks distinguishes between blocks comprising scheduling information and blocks not comprising scheduling information. Blocks that do not include scheduling information are processed in a conventional manner as previously described, but if the block contains scheduling information, the UE ignores acknowledgments from Node Bs that do not require scheduling information. Although these Node Bs are not required to send acknowledgments, they sometimes do. The UE continues to retransmit the block until the Node B(s) responsible for scheduling sends a positive acknowledgment. Since this proced...

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Abstract

A method of uplink transmission in a mobile terminal (1) in soft handover comprises determining whether a data block to be transmitted includes scheduling information (8). If it does, the next step is to determine a set of one or more base stations (2, 3) to which the scheduling information is directed and monitor for an acknowledgement (10, 11) at the mobile terminal from the or each scheduling base station in the set. The mobile terminal (1) continues to transmit the scheduling information until all the scheduling base stations have acknowledged receipt.

Description

technical field [0001] The present invention relates to a method for uplink transmission in a soft-handover mobile terminal. Background technique [0002] Enhanced Uplink (E-DCH) is a set of features introduced in Release 6 of the 3rd Generation Partnership Project (3GPP) aimed at improving radio resource management in the uplink and thus improving the uplink throughput and reduce latency. [0003] One of the main features introduced into E-DCH is Node B scheduling. In this feature, a base station or Node B is given autonomy to limit the data rate at which an E-DCH enabled terminal can transmit using layer 1 signaling in order to manage at least a portion of its Wideband Code Division Multiple Access (WCDMA) interference . To facilitate Node B scheduling, it is required that information be sent by a mobile terminal or user equipment (UE) to a Node B. This information can be sent using separate physical layer signaling, or as an included header with the E-DCH data packet....

Claims

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Application Information

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IPC IPC(8): H04W52/40H04L12/56H04L1/18H04L1/16H04W24/00H04W28/04H04W36/18H04W72/12
CPCH04W28/04H04L1/1887H04W72/1278H04W36/18H04L1/1607H04W72/20H04W72/12
Inventor A·P·哈尔伯特T·M·查普曼P·布克J·克劳斯
Owner SIEMENS AG