Method for combining with power controlling based on HARQ of IEEE802.16e

A power control, combined technology, applied in the direction of control/equalization of transmission, error prevention/detection using return channel, advanced technology, etc., can solve power waste, balance problem of power and delay without further study, joint consideration And other issues

Inactive Publication Date: 2008-10-15
BEIJING NORTHEN FIBERHOME TECH CO LTD
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Problems solved by technology

However, this is only applicable to CDMA systems, and is limited to the case of a single user. When there are multiple users, the decrement mode will use the HARQ mechanism for all users, without further research on the balance of power and delay.
In addition, a large number of literatures study the power allocation problem in the system, all of which aim at maximi

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  • Method for combining with power controlling based on HARQ of IEEE802.16e
  • Method for combining with power controlling based on HARQ of IEEE802.16e
  • Method for combining with power controlling based on HARQ of IEEE802.16e

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Embodiment Construction

[0024] The power control in the WIMAX system must be combined with sub-channel allocation, and one-to-one mapping between users and sub-channels is satisfied, and then the combination strategy of HARQ and power control that balances power and delay invented in this paper is highlighted. Assuming that there are K users and N sub-channels in the system, according to the limitation of one-to-one mapping between users and sub-channels, let K=N. transmit power matrix P → = { P kn | k = 1,2 , . . . , K ; n = 1,2 , . . . , N } ...

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Abstract

The invention relates to a method for combining HARQ with power control based on IEEE802.16e. By introducing the parameter of 'the proportion of repeat request users', the method realizes the compromise of power and delay in a multi-carrier system, by fully utilizing the repeat request combination gain of an HARQ mechanism during the power control process, the method effectively reduces the total transmission power and meets the certain requirements of signal to interference and noise ratio and delay and respectively provides simple and easy combination strategies aiming at two sub-channel dividing mechanisms in a protocol. As for a non-real-time system, if the objective frame error rate and the total transmission power restriction of each user are given, the strategy can meet the frame error rate and the power restriction required by the system by the selection of a proper repeat request user proportion and at the cost of certain delay; or when the objective frame error rate and the tolerable maximum delay of the system of each user are given, the strategy can select the corresponding repeat request user proportion to realize the minimum total transmission power.

Description

technical field [0001] The invention relates to the field of digital broadband mobile wireless communication, in particular to a method combining HARQ and power control based on IEEE802.16e. Background technique [0002] Power control is a radio resource management technology. From the service point of view, it minimizes the total transmission power on the premise of meeting the service quality requirements. Power control is very important for the efficiency of WIMAX system. The power level must be effectively managed to ensure stable communication and reduce potential interference, especially in non-line-of-sight (NLOS, Non Line OfSight) transmission. Power control is to achieve link optimization important functions. NLOS means that the antenna can be located in or on the customer's set-top box, without having to install and locate an outdoor antenna, and its wireless channel environment is therefore much more complicated than that of line-of-sight (LOS, Line Of Sight) tra...

Claims

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Application Information

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IPC IPC(8): H04B7/005H04L1/18
CPCY02D30/70
Inventor 谢清余建国
Owner BEIJING NORTHEN FIBERHOME TECH CO LTD
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