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Frequency domain differential CQI report method and equipment of dynamic configuring maximum differential valve

A dynamic configuration, maximum difference technology, applied in multi-frequency code systems, link quality-based transmission modification, digital transmission systems, etc., can solve the problem of heavy uplink signaling and achieve the effect of optimizing signaling

Inactive Publication Date: 2007-07-18
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for each user equipment, the more scheduling frequency bands it reports, the heavier the corresponding required uplink signaling burden

Method used

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  • Frequency domain differential CQI report method and equipment of dynamic configuring maximum differential valve
  • Frequency domain differential CQI report method and equipment of dynamic configuring maximum differential valve
  • Frequency domain differential CQI report method and equipment of dynamic configuring maximum differential valve

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Embodiment

[0051] In order to illustrate the method of the invention, an example of the method of the invention is given below. In this embodiment, the system has a total of M=8 sub-frequency bands, and the number of CQI sub-frequency bands to be reported by each user equipment in the system is fixed at N=4. It is assumed that the channel quality of a user equipment on 8 sub-bands is as shown in FIG. 8 . The entity that terminates the RRC protocol at the network side initially configures the user with a maximum frequency-domain differential CQI value of 7 (binary value is 111).

[0052] There are two ways to realize the maximum frequency domain differential CQI value initially configured for the user by the entity terminated by the RRC protocol at the network side: one is to directly indicate the maximum frequency domain differential CQI value as 7 (binary value is 111), and the other The number of information bits required for instructing the user equipment to report the differential C...

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Abstract

This invention relates to a method for a frequency domain difference reporting CQI dynamically configuring differ3ence values including the following steps: a network end transmits the initial configuration information of frequency domain maximum difference CQI value to a user device to configure the maximum difference CQI value of the initial frequency domain of the user device, the user measures relatively to send the CQI report of frequency domain difference to the base station, the network end sends the re-configuration information of the domain maximum difference CQI value to re-configue the maximum difference value, which avoids reporting the absolute CQI value of all reporting bands by reporting the difference value of the CQI value of other reporting bands and the optimum sub-band and realizes the dynamic control of the difference bit number expressing difference value to further optimize the CQI report signaling.

Description

technical field [0001] The invention relates to a wireless communication system, in particular to a reporting method for channel quality indication used for frequency domain scheduling in the wireless communication system. Background technique [0002] Now, the third generation partnership project (referred to as 3GPP) standardization organization has begun to carry out long-term evolution (LTE) of its existing system specifications. Among many physical layer transmission technologies, Orthogonal Frequency Division Multiplexing (OFDM) technology has become a promising one among all downlink schemes because of its high spectrum utilization rate and low processing complexity. [0003] OFDM technology is essentially a multi-carrier modulation communication technology. Its basic principle is to decompose a high-rate data stream into several low-rate data streams and transmit them simultaneously on a group of mutually orthogonal sub-carriers. OFDM technology has performance adva...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L27/26
CPCH04L1/0029
Inventor 孙程君张玉建孙春迎李小强李周镐
Owner BEIJING SAMSUNG TELECOM R&D CENT
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