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Report information generation device, communication device, report information generation method, and program

A technology for notifying information and generating devices, applied in the direction of wireless communication, multiplex communication, and signaling as a feature

Active Publication Date: 2013-04-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0038] Furthermore, since the information volume of the control information in the communication system is reduced compared to the case of compressing the difference using audio data, etc., the requirement for error tolerance is high, and the It is necessary to consider the design of the error correction coding gain among the modulation parameters representing the notification information, so it is difficult to apply the compression technology using the difference of the audio data etc. as it is

Method used

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  • Report information generation device, communication device, report information generation method, and program
  • Report information generation device, communication device, report information generation method, and program
  • Report information generation device, communication device, report information generation method, and program

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no. 1 Embodiment approach

[0213] In the first embodiment, as an example, a case where modulation parameter information is used as channel quality information will be described.

[0214] figure 1 It is a functional block diagram showing a configuration example of the base station apparatus 100 in the first embodiment according to the present invention. in addition, figure 2 It is a functional block diagram showing a configuration example of the terminal device 200 in the first embodiment according to the present invention. In the first embodiment, the base station apparatus 100 notifies information on the modulation parameters used for adaptive modulation of the transmission data of the downlink as the notification information of the downlink link, and the terminal apparatus 200 notifies the next downlink link as the notification information of the uplink link. The situation when the information on the modulation parameters of the transmitted data.

[0215] The base station apparatus 100 includes a...

no. 2 Embodiment approach

[0277] In the second embodiment, as an example, a case will be described in which a channel state estimation result is used as channel quality information.

[0278] Figure 11 It is a functional block diagram showing a configuration example of the base station apparatus 190 in the second embodiment according to the present invention. in addition, Figure 12 It is a functional block diagram showing a configuration example of the terminal device 290 in the second embodiment according to the present invention. In the second embodiment, the information on the modulation parameters used for adaptive modulation of the transmission data of the downlink is notified as the notification information of the downlink, and the transmission estimated from the reception signal of the downlink is notified as the notification information of the uplink. The state of the route.

[0279] Figure 11 The base station device 190 shown has and figure 1 The illustrated base station apparatus 100 ...

no. 3 Embodiment approach

[0299] In the third embodiment, a notification information generation device using a specific example in which a difference value is calculated will be described. In the following narration, use image 3 The notification information generation apparatus 400 shown in the illustration describes the case of inputting modulation parameters as an example of channel quality information, but it may also be used in Figure 13 The notification information generating means 490 shown is applied.

[0300] Use the variable i to represent the sub-carrier block (channel) number, make the modulation parameter of the i-th sub-carrier block Q(i), and the cumulative value (restored value) compared with the modulation parameter of the i-th sub-carrier block is S(i) , the difference value is D(i). i 0 Indicates the number of the subcarrier block used as the starting point. R(i) represents notification information of the i-th subcarrier block.

[0301] In the starting subcarrier block, the sel...

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Abstract

To generate notification information for improving accuracy of channel quality information reconstructed based on a difference in notifying using the difference in channel quality information between channels. A notification information generating apparatus 400 has a notification information table 401 that stores a plurality of difference-value candidate values each indicating a difference between two pieces of channel quality information as candidate values for the notification information, a reconstructing section 403 that generates a reconstruction value using the notification information generated based on the channel quality information of a first channel, and a selecting section 402 which receives the channel quality information of a second channel differing from the first channel, selects a single candidate value from the candidate values for the notification information based on the channel quality information of the second channel and the reconstruction value, and generates the notification information based on the selected candidate value.

Description

technical field [0001] The present invention relates to a technique for generating notification information for notifying a destination (communication destination) of information on a transmission path state in a communication system using a plurality of subcarriers. Background technique [0002] In communication systems, in order to improve communication efficiency (total throughput and transmission speed of the system), it is being studied to determine the modulation method, channel coding rate, error correction coding method, diffusion rate, and code multiplexing according to the receiving state. number, transmission power, or combinations thereof (hereinafter referred to as "modulation parameters"), etc. (refer to Non-Patent Document 1 and Non-Patent Document 2). [0003] In a communication system employing an adaptive modulation scheme, it is necessary to notify the communication partner device of the transmission path states listed below or modulation parameters selec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J1/00H04J11/00H04B17/24H04B17/309H04B17/336H04J99/00H04W24/10H04W28/18H04W72/04
CPCH04L1/0026H04L1/0029
Inventor 小野寺毅野上智造冈本直树
Owner HUAWEI TECH CO LTD