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Method of increasing the capacity of enhanced data channel on uplink in a wireless communications system

A wireless communication system and data channel technology, applied in the field of wireless communication systems, can solve problems such as less delay, and achieve the effect of power reduction and capacity increase

Inactive Publication Date: 2008-10-22
LUCENT TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For VoIP applications, the 2ms TTI length may be better because of less delay compared to 10ms TTI length, especially when using a larger number of HARQ retransmissions resulting in increased time diversity

Method used

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  • Method of increasing the capacity of enhanced data channel on uplink in a wireless communications system
  • Method of increasing the capacity of enhanced data channel on uplink in a wireless communications system
  • Method of increasing the capacity of enhanced data channel on uplink in a wireless communications system

Examples

Experimental program
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Embodiment Construction

[0015] According to FIG. 1 , UE 101 communicates with Node B 102 and Node B 103 on the enhanced data channel in a soft handover situation. The figure illustrates that Node B 102 and Node B 103 are connected to the same multi-Node B (or multi-base station) controller 104, which is referred to here and in UMTS terminology as an RNC (Radio Network Controller). For greater clarity, the connection of RNC 104 to the core network is not shown, but would be understood by those skilled in the art. The marked transmission 105 indicates that UE 101 is sending a packet to Node Bs 102 and 103 on the uplink via E-DPDCH and E-DPCCH. Both Node Bs 102 and 103 attempt to decode E-DPDCH and E-DPCCH transmissions independently. If the E-DPDCH packet is successfully decoded by either Node B 102 or Node B 103, the Node B decoding the packet sends a positive acknowledgment (ACK) to UE 101 via either Node B 102 initiated transmission 106 or Node B 103 initiated transmission 107 . If UE 101 receive...

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Abstract

In a UMTS wireless communication system, when the packet size on the enhanced dedicated physical data channel (E-DPDCH) on the uplink from a UE to a NodeB reaches a converged default packet size, the corresponding dedicated physical control channel (E-DPCCH) is turned off. The NodeB uses the default packet size to decode the frame received on the E-DPDCH using each possible redundancy version. Alternatively, the E-DPCCH is turned off and a new transmission flag is transmitted by the UE only when a new frame is transmitted by the UE. NodeB then uses the presence or absence of that flag in conjunction with the absence of E-DPCCH to determine which redundancy version is to be assumed in decoding the frame received on E-DPDCH.

Description

technical field [0001] The present invention relates to wireless communication systems. Background technique [0002] A wireless communication network generally includes a plurality of communication nodes coupled by wireless or wired connections and accessed through different types of communication channels. Each communication node includes a protocol stack that handles data sent or received over the communication channel. The operation and configuration of the multiple communication nodes differs depending on the type of communication system, and typically bears different names. Such communication systems include, for example, a Code Division Multiple Access 2000 (CDMA2000) system and a Universal Mobile Telecommunications System (UMTS). [0003] The third-generation wireless communication protocol standards (for example, 3GPP-UMTS, 3GPP2-CDMA2000, etc.) can use a dedicated transmission channel in the uplink (for example, between a mobile station (MS) or user equipment (UE...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04Q7/38H04B1/707H04J13/00H04W28/06H04W28/18H04W48/08H04W76/04
CPCH04W48/08H04W28/18H04L1/0025H04L1/0075H04L1/1816H04W28/06H04L1/08H04L1/0039H04W76/04H04L1/0046H04W76/20H04L5/0055
Inventor R·W·巴克尔A·M·劳M·沙赫特H·H·耶
Owner LUCENT TECH INC