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Method and arrangement for allocating radio resources in a communication system

A radio resource, a technology using radio, applied in the field of communication systems

Inactive Publication Date: 2009-09-09
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The problem with the scheduler in this case is that it will schedule, say, one stream per user, but needs a CQI that reflects the interference that occurs due to multiple user transmissions

Method used

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  • Method and arrangement for allocating radio resources in a communication system
  • Method and arrangement for allocating radio resources in a communication system
  • Method and arrangement for allocating radio resources in a communication system

Examples

Experimental program
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Embodiment Construction

[0027] figure 1 Depicted is a communication system comprising a Radio Access Network (RAN) such as a UMTS Terrestrial Radio Access Network (UTRAN) architecture comprising at least one radio connected to one or more Radio Network Controllers (RNC) 10 Base station (RBS) (eNodeB or Node B)15( figure 1 Two are shown in ). The RAN is connected to a core network (CN) 12 . The RAN and CN 12 provide communication and control for a plurality of user equipments (UEs) 18 each using a downlink (DL) channel 16 and an uplink (UL) channel 17 . For clarity, only one uplink channel is marked 17 and one downlink channel is marked 16 . On the downlink channel 16, the RBS 15 transmits to each user equipment 18 at a corresponding power level. On the uplink channel 17, the user equipment 18 transmits data to the RBS 15 at a corresponding power level.

[0028] According to a preferred embodiment of the present invention, the communication system is described herein as an HSDPA communication sys...

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Abstract

The present invention relates to a method and an arrangement of facilitating the allocation of radio resources in a communication network, comprising a communication network node (15) communicating with said user equipment (18) by means of data streams over a radio interface on radio channels. A channel quality message having a length of a predefined number of bits is provided comprising information which is used for comparing an obtained channel quality if a single data stream transmission is selected or if a multi data stream transmission is selected for said communication. The available radio resources are then allocated based on said channel quality message.

Description

technical field [0001] The present invention relates to methods and arrangements in communication systems, in particular to arrangements for assigning radio resources in communication networks and methods for such assignments. Background technique [0002] CQI or Channel Quality Indicator is used to change the rate of the radio link eg in High Speed ​​Downlink Packet Access (HSDPA). A user equipment (UE) measures the quality of the radio channel (ie a function of SINR) and reports its value or function to the network. The network scheduler can then use this value to change transmission parameters (eg, modulation order and coding rate) so that the UE can decode the data with a specified error probability. [0003] When MIMO (Multiple Input Multiple Output) transmit / receive capability is introduced, link changes and thus CQI reporting can be handled separately between multiple data streams transmitted during one Transmit Time Interval (TTI). In this case, the UE measures the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08H04W72/54
CPCH04L1/0025H04W72/0413H04L1/0029H04W72/085H04L1/0026H04W72/21H04W72/542
Inventor 布·约兰松斯蒂芬·格兰特乔治·约恩格伦
Owner TELEFON AB LM ERICSSON (PUBL)