Method for optimizing physical uplink control channel detection and measurement

A physical uplink and control channel technology, applied in the field of optimizing physical uplink control channel PUCCH detection and measurement, can solve problems such as affecting PDSCH transmission performance, eNB unable to judge whether decoding is wrong, not considering CDM structure information, etc. achieve the effect of improving efficiency

Active Publication Date: 2012-01-11
北京万海云科技有限公司
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Problems solved by technology

The existing detection algorithm has the following disadvantages: since the encoding has no CRC check, the data can always be decoded by hard-decision decoding, without considering the structure information of CDM, eNB cannot judge whether the decoding is wrong, and it does not judge whether it has caused damage to the PUCCH. Missed detection, and BLER statistics cannot be performed at the same time
BLER statistics are very important for PUCCH outer-loop power control, and the inability to know the transmission status of PUCCH also affects the fine adjustment of PUCCH closed-loop power control; the above two aspects will cause PUCCH power control to be unreasonable, unable to quickly meet its transmission QoS requirements, and Further affect the performance of downlink PDSCH transmission

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  • Method for optimizing physical uplink control channel detection and measurement
  • Method for optimizing physical uplink control channel detection and measurement
  • Method for optimizing physical uplink control channel detection and measurement

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] Such as Figure 4 As shown, the method for optimizing PUCCH detection and measurement proposed by the present invention includes the following steps:

[0031] 401. Set an activation detection threshold and a decoding decision threshold;

[0032] 402. According to the characteristics of the code division multiplexing CDM transmission structure of the PUCCH and the soft bit information after the demodulation of each constellation symbol of the PUCCH, respectively calculate the cumulative energy of the activated soft bits and the energy of the decoded soft bits of different PUCC H formats;

[0033] 403. Compare the accumulated energy of activated soft bits with the activation detection threshold, and determine whether the PUCCH is "missed det...

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Abstract

The invention discloses a method for optimizing physical uplink control channel (PUCCH) detection and measurement. According to the method, CDM structure information is taken into consideration, appropriate activation detection threshold and decoding decision threshold are arranged, scenes of 'missing detection' and 'false detection' are distinguished, thus an eNB can obtain accurate PUCCH transmission information, BLER is calculated, a condition is created for optimization of PUCCH power control, and efficiency of uplink and downlink transmission is raised.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for optimizing the detection and measurement of a physical uplink control channel PUCCH. Background technique [0002] LTE (Long Term Evolution, long-term evolution technology) is a third generation partnership project (3GPP) standard, and is currently a hot technology in the field of mobile communications. The PUCCH (Physical Uplink Control CHannel) of LTE mainly has the following format: [0003] PUCCH format 1: used for the terminal to send an SR (Schedule Request, scheduling request) uplink; [0004] PUCCH format 1a: used for the terminal to send 1-bit ACK / NAK uplink; [0005] PUCCH format 1b: used for the terminal to send 2-bit ACK / NAK uplink; [0006] PUCCH format 2: Transmission of periodic CSI (channel state information) information, including CQI (channel quality indication), PMI (precoding matrix indicator), RI (rank indication), etc.; [0007] PUCCH for...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/16
Inventor 白杰张连波
Owner 北京万海云科技有限公司
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