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Conveying number of required HARQ repetitions for coverage enhancement

A technology of sending times and predetermined times, applied in transmission systems, digital transmission systems, sub-channel allocation of transmission paths, etc., and can solve problems such as reduced spectral efficiency and downlink transmission.

Active Publication Date: 2017-05-10
PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0052] However, time-domain repetition may also result in reduced spectral efficiency, since it requires more physical resources for each user equipment (UE) to repeat the transmission
This can be severe for downlink transmission

Method used

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  • Conveying number of required HARQ repetitions for coverage enhancement
  • Conveying number of required HARQ repetitions for coverage enhancement
  • Conveying number of required HARQ repetitions for coverage enhancement

Examples

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Embodiment approach

[0096] A data transmitting device (such as an eNodeB in LTE, or typically a base station or a network node) can then use the fed back beam length information Ne to control the applied transmit beam size N, i.e. adapt the transmit beam size N to future downlink transmissions (for example, in the outer ring). Specifically, the data transmitting device may generate control information indicating a new transmission beam length N and send it to the data receiving device, and apply the signaled transmission beam length when transmitting other data parts. Such control information may be conveyed within higher layer messages. Then, the data receiving device may transmit confirmation of the newly set transmission beam length from the data receiving device to the data transmitting device. As mentioned above, such signaling may be performed by radio resource control protocols at radio bearer establishment and / or at reconfiguration. However, the invention is not limited to this implemen...

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PUM

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Abstract

The invention relates to conveying the number of required HARQ repetitions for coverage enhancement. The invention relates to transmission and reception of data in a wireless communication system. In particular, the predetermined number of repetitions of the same data portion is transmitted over the wireless interface. The receiving device receives the repetitions, attempts their decoding and checks whether the decoding was successful. If the decoding was successful after the predetermined number of repetitions or less, a positive acknowledgement is generated. In addition, a feedback including a bundle size information is generated and transmitted. The bundle size information includes a number of repetitions, smaller or equal to the predetermined number, after which the decoding was successful. The feedback is transmitted to the data transmitting device which may adapt the predetermined number of repetitions accordingly. The invention enables efficient control of the number of repetitions applied which is particularly advantageous for coverage enhancement purposes.

Description

technical field [0001] The present invention relates to the transmission of data and feedback regarding the reception of this data in a wireless communication system. Background technique [0002] Third generation (3G) mobile cellular systems, such as the Universal Mobile Telecommunications System (UMTS) standardized within the Third Generation Partnership Project (3GPP), have been based on Wideband Code Division Multiple Access (WCDMA) radio access technology. Today, 3G systems are being widely deployed around the world. After enhancing the technology by introducing High Speed ​​Downlink Packet Access (HSDPA) and Enhanced Uplink (also known as High Speed ​​Uplink Packet Access (HSUPA)), the next major step in the evolution of the UMTS standard has brought Here comes the combination of Orthogonal Frequency Division Multiplexing (OFDM) for the downlink and Single Carrier Frequency Division Multiplexing Access (SC-FDMA) for the uplink. This system has been named Long Term Ev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
CPCH04L1/1671H04L1/1864H04L1/189H04L1/1861H04W72/21H04W72/51H04L5/0055
Inventor A.戈利切克埃德勒冯埃尔布沃特山本哲矢铃木秀俊高驰冯素娟P.巴苏马利克
Owner PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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