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Method for scheduling uplink transmissions from user equipments by a base station determining a measure of a quality of service, and corresponding base station, user equipment and communication system

A technology for user equipment and quality of service, applied in transmission systems, digital transmission systems, radio transmission systems, etc., can solve problems such as UE mutual interference

Inactive Publication Date: 2010-09-15
FUJITSU LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, rate scheduling has the disadvantage that since many UEs may be transmitting at the same time, these UEs will respectively interfere with each other

Method used

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  • Method for scheduling uplink transmissions from user equipments by a base station determining a measure of a quality of service, and corresponding base station, user equipment and communication system
  • Method for scheduling uplink transmissions from user equipments by a base station determining a measure of a quality of service, and corresponding base station, user equipment and communication system
  • Method for scheduling uplink transmissions from user equipments by a base station determining a measure of a quality of service, and corresponding base station, user equipment and communication system

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[0065] In a first embodiment of the invention, a base station receives data packets from multiple UEs and buffers these packet data to forward them to multiple source UEs. Data packets are stored on a first-in-first-out (FIFO) basis. The base station runs a downlink scheduling mechanism such as the HGPS mentioned above in order to schedule the transmission of data packets to the source UE. Downlink transmission is performed using, for example, High Speed ​​Downlink Packet Access (HSDPA). In this technique, multiple channels are available for transmitting data, each channel having a different channel code. Downlink transmissions are divided into a series of Transmission Time Intervals (TTIs), and data packets are transmitted to selected UEs on each of the different available channels. A new choice of which UE is served by which channel can be made in each TTI. Further details of HSDPA can be found in the above mentioned UK Patent Application No. 0216239.4.

[0066] In this ...

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Abstract

A method of transmitting data packets in an uplink from a plurality of source user equipments to a base station, the data packets being for onward transmission to a plurality of destination user equipments, is disclosed. The method comprising the steps of determining a measure of a quality of service from the base station to a destination user equipment, and scheduling uplink transmissions from the source user equipments to the base station in dependence on the measure of a quality of service.

Description

technical field [0001] The present invention relates to techniques for uplink transmission scheduling in wireless communication systems. In particular (but not exclusively), the present invention is applicable to Code Division Multiple Access (CDMA) communication systems such as 3G mobile communication systems. Background technique [0002] figure 1 Components of a wireless communication system are shown in which a plurality of source user equipment UE1, UE2, UE3 communicates with a plurality of destination user equipment UE4, UE5, UE6 via a base station BS. Source UEs: UE1, UE2, UE3 send data packets to the base station BS through uplink. The base station BS receives data packets from the source UE and buffers these data packets for handover to the destination UE via the downlink. In this example, each radio channel is assigned a separate channel code to distinguish the channel from other channels (CDMA). [0003] exist figure 1 In the system of , the base station is r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/54H04L12/863H04L12/801H04L12/56H04W24/00H04L12/873H04W72/12H04L47/52
CPCH04L47/626H04L47/14H04W72/1231H04L12/5693H04L47/6255H04L47/39H04L47/6265H04L47/522H04L47/54H04L47/50H04W72/542H04B7/2606H04W8/04
Inventor 赛义德·阿备帝
Owner FUJITSU LTD
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