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Wireless communication method and apparatus coordinating node-b's and supporting enhanced uplink transmissions during handover

A wireless communication system and chain transmission technology, applied in the field of wireless communication systems

Active Publication Date: 2006-08-30
PANTECH WIRELESS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this example, these data blocks in the source cell were not used by previous transmissions

Method used

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  • Wireless communication method and apparatus coordinating node-b's and supporting enhanced uplink transmissions during handover
  • Wireless communication method and apparatus coordinating node-b's and supporting enhanced uplink transmissions during handover
  • Wireless communication method and apparatus coordinating node-b's and supporting enhanced uplink transmissions during handover

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Embodiment Construction

[0019] The invention will be described with reference to the drawings, wherein like reference numerals refer to like components throughout.

[0020] Hereinafter, the term "WTRU" may include, but is not limited to, user equipment (UE), mobile station, fixed or mobile subscriber unit, pager, or any other type of component operable in a wireless environment.

[0021] Hereinafter, the term "Node-B" may include, but is not limited to, base stations, site controllers, access points or other interconnected components in a wireless environment.

[0022] The present invention can be implemented in as GSM-frequency division duplex, time division duplex, time division synchronous code division multiple access (TDSCDMA), code division multiple access 2000 (CDMA2000) (EV-D0 and EV- DV) or any type of wireless communication system.

[0023] The features of the present invention may be incorporated into integrated circuits or configured in circuits comprising a plurality of interconnected c...

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Abstract

A wireless communication method and apparatus for coordinating Node-Bs during handover for enhanced uplink (EU) transmission. In one embodiment, a radio network controller (RNC) initiates an inter-Node-B soft handover. A wireless transmit / receive unit (WTRU) establishes communication connections with a plurality of Node-Bs. A particular one of the Node-Bs is designated as being a primary Node-B, and each of other Node-Bs are designated as being a non-primary Node-B. The RNC informs all of the Node-Bs that the particular Node-B is a primary Node-B. The primary Node-B schedules EU transmission and performs ACK / NACK during soft handover. In another embodiment, the RNC initiates a hard handover for a WTRU connected to a source Node-B. The RNC sends an activation timer to the source Node-B to set the time for handover. As many previously negatively acknowledged (NACKed) data packets as possible are prioritized for retransmission in the source Node-B before the activation timer expires.

Description

technical field [0001] The present invention relates to wireless communication systems. More particularly, the present invention relates to a method and apparatus for integrating Node Bs and supporting Enhanced Uplink (EU) transmission during handover. Background technique [0002] Many schemes have been proposed to improve the coverage, throughput and transmission delay of enhanced uplink transmission in the 3rd Generation Partnership Project (3GPP). One of the developments is to move the functions of scheduling and allocating uplink (UL) actual channel resources from the radio network controller (RNC) to the Node B. Node B can make more effective decisions and manage uplink radio resources than the radio network controller on a short-term basis. A similar approach has been adopted in Downlink High Speed ​​Data Packet Access (HSDPA) in Universal Mobile Telecommunications System (UMTS) Frequency Division Duplex (FDD) and Time Division Duplex (TDD) modes. [0003] It is al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/00
Inventor 张国栋辛颂祐史蒂芬·E·泰利詹姆斯·M·米勒史蒂芬·G·迪克
Owner PANTECH WIRELESS LLC