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Device and method for dynamically confirming CFI (Control Format Indication)

A technology of control format indication and dynamic determination, applied in the field of communication, can solve problems such as unreasonable utilization of downlink physical resources, and achieve the effect of improving utilization rate

Inactive Publication Date: 2013-08-07
GLOBAL INNOVATION AGGREGATORS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a device and method for dynamically determining the control format indication, so as to solve the problem of unreasonable utilization of downlink physical resources caused by the method of using fixed CFI values ​​in the prior art

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  • Device and method for dynamically confirming CFI (Control Format Indication)
  • Device and method for dynamically confirming CFI (Control Format Indication)
  • Device and method for dynamically confirming CFI (Control Format Indication)

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Embodiment Construction

[0050] The present invention proposes an improved method and device, so that control domain resources and data domain resources in downlink physical resources can be allocated reasonably and flexibly, and the utilization rate of PDCCH and PDSCH resources is improved.

[0051] The preferred embodiments of the present invention are described below in detail with reference to the accompanying drawings, which constitute a part of the present application and together with the embodiments of the present invention, serve to explain the principles of the present invention. For the purpose of clarity and simplicity, detailed detailed descriptions of well-known functions and structures in the devices described herein are omitted when it may obscure the subject matter of the present invention.

[0052] First combine with figure 1 The device of the present invention will be described in detail.

[0053] like figure 1 shown, figure 1 It is a schematic structural diagram of the device ac...

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Abstract

The present invention discloses a device for dynamically determining Control Format Indicator (CFI), which comprises a cell parameter configuration unit (2); a Physical Hybrid Automatic Repeat Request Indicator Channel (PHICH) calculation unit (3) for calculating PHICH parameters on the basis of parameters of the cell parameter configuration unit (2), and for transmitting the result to a CFI calculation unit (4); a scheduling calculation unit (7), when the information to be scheduled in air interface sub-frames changes, for calculating the total demanded resource number of Control Channel Element (CCE); a CFI calculation unit (4) and a CFI mapping unit (10), when the air interface sub-frames are determined to belong to a predetermined type, for calculating the total demanded resource number of Resource Element Group (REG) and determining the value of CFI. The present invention also correspondingly discloses a method for dynamically determining CFI. Through dynamically determining the value of CFI, the present invention enables that the resources of the control area and the data area in the downlink physical resources can be allocated flexibly, thereby improving the availability of downlink Physical Downlink Control Channel (PDCCH) and Physical Downlink Shared Channel (PDSCH) resources.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a device and method for dynamically determining a control format indication. Background technique [0002] The CFI (Control Format Indicator, Control Format Indicator) information in the LTE (Long Term Evolution, Long Term Evolution) system represents the OFDM (orthogonal frequency division multiplexing, orthogonal frequency) used to transmit the PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) division multiplexing) symbols. The value of CFI determines the control domain (including the packet dedicated control channel PDCCH, the physical hybrid retransmission indicator channel PHICH and the physical format indicator channel PCFICH) and the data domain (ie PDSCH, Physical Downlink Shared Channel, Physical Downlink Shared Channel) in a subframe ) the proportion of OFDM symbols occupied. [0003] The document 3GPP TS36.211.8.5.0 s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04W72/04H04L1/18H04L12/24
CPCH04W72/04
Inventor 谭源春彭佛才
Owner GLOBAL INNOVATION AGGREGATORS LLC
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