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Method for transmitting uplink control information, wireless terminal and base station

A technology for link control information and wireless terminals, which is applied in the directions of wireless communication, multiplexing communication, forward error control use, etc., and can solve problems such as inability to efficiently utilize wireless resources.

Active Publication Date: 2016-08-31
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the semi-static UL-DL structure cannot follow the sudden increase of communication traffic or the change of downlink or uplink traffic volume, it points out the problem that radio resources cannot be efficiently utilized

Method used

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  • Method for transmitting uplink control information, wireless terminal and base station
  • Method for transmitting uplink control information, wireless terminal and base station
  • Method for transmitting uplink control information, wireless terminal and base station

Examples

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no. 1 example

[0066] Figure 7 A configuration example of a wireless communication system according to the present embodiment is shown. The wireless communication system provides communication services such as voice communication, packet data communication, or both. refer to Figure 7 , the wireless communication system includes a wireless terminal 1 and a base station 2 . Wireless terminal 1 generates an uplink signal and transmits the uplink signal to base station 2 . Base station 2 generates a downlink signal and transmits the downlink signal to wireless terminal 1 . The present embodiment is described on the assumption that the wireless communication system is a system in 3GPP Release 8 and later (ie, LTE). Specifically, the radio terminal 1 corresponds to an LTE-supporting user equipment (UE), and the base station 2 corresponds to an eNodeB (eNB).

[0067] The procedure for calculating the number of resource elements (the number of coded symbols) used for UCI (CQI / PMI, HARQACK / NACK,...

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Abstract

A wireless terminal (1) is configured so as to (a) determine, in accordance with a first calculation method, a symbol number (Q') encoded for uplink control information in a case where the uplink control information is to be sent with a first sub-frame within a wireless frame; and to (b) determine, in accordance with a second calculation method that differs from the first calculation method, a symbol number (Q') encoded for the uplink control information in a case where the uplink control information is to be sent with a second sub-frame within the wireless frame. This can contribute, for example, to adjusting on a sub-frame level redundancy for encoded uplink control information (UCI) bits.

Description

technical field [0001] The present invention relates to wireless communication systems, and more particularly to the transmission of uplink control information from wireless terminals to base stations. Background technique [0002] The structure of the radio frame (radio frame), time division duplex (time division duplex, TDD) and uplink Summary of link sending. Furthermore, the enhanced interference mitigation and traffic adaptation (eIMTA) recently discussed in 3GPP Release 12 is explained. [0003] First, the LTE radio frame structure will be described. In 3GPP Release 8 and its successors (ie, LTE), two radio frame structures are defined. One of them is called frame structure type 1, and the frame structure type 1 is suitable for frequency division duplex (FDD). The other is called frame structure type 2, which is suitable for TDD. Such as figure 1 As shown, in the frame structures of both Type 1 and Type 2, the length of 1 radio frame is 10 ms, and 1 radio frame i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04J11/00H04L1/16H04L27/01
CPCH04L1/00H04L1/0073H04L5/0057H04L5/0055H04L5/0073H04L1/1671H04L1/1861H04W76/10H04W72/21
Inventor 桶谷贤吾
Owner NEC CORP
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