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Method and device for determining the number of OFDM symbols occupied by control channel

A technology for controlling channels and controlling channel particles, which is applied to digital transmission systems, multiple use of transmission paths, electrical components, etc., and can solve problems such as insufficient utilization of resources, reduction of data transmission rates, and reduction in the number of scheduled users.

Active Publication Date: 2013-12-18
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] In the above two schemes, the CFI value is determined by fixed configuration or only according to the uplink and downlink control information transmitted in the subframe, so the bandwidth resources occupied by the control channel cannot be effectively adjusted, resulting in a reduction in the number of scheduled users and a reduction in system capacity , or cannot make full use of resources, reducing the data transfer rate

Method used

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  • Method and device for determining the number of OFDM symbols occupied by control channel
  • Method and device for determining the number of OFDM symbols occupied by control channel
  • Method and device for determining the number of OFDM symbols occupied by control channel

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Embodiment 2

[0201] The embodiment of the present invention also discloses a method embodiment 2 for determining the number of OFDM symbols occupied by the control channel, which may include the following steps:

[0202] Step S201, judging whether PHICH transmission is used in the current subframe, if yes, execute step S202, if not, execute step S204;

[0203] Step S202, judging that the PHICH is in normal mode or extended mode, if it is normal mode, execute step S204, if it is in extended mode, execute step S203;

[0204] Step S203, determining that the number of OFDM symbols occupied by the control channel in the special subframe is 2, and the number of OFDM symbols occupied by the control channel in other subframes is the maximum;

[0205] Specifically, the control channel in the special subframe is configured to occupy 2 OFDM symbols, the control channel in other subframes in the broadband system is configured to occupy 3 OFDM symbols, and the control channel in other subframes in the ...

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Abstract

The embodiment of the invention provides a method and device for determining the number of OFDM symbols occupied by a control channel. The method includes the steps that if a PHICH is not adopted in a current subframe for transmission or the PHICH is adopted in the current subframe for transmission, the PHICH is in a common mode, and the scheduling user number of the current subframe is obtained; the number of CCEs is calculated; the number of OFDM symbols occupied by the control channel in the current subframe is determined according to the scheduling user number and the number of CCEs. In the method, full consideration is given to the practical scheduling user number and the environment of the control channel, system resources can be reasonably allocated, and system scheduling performance and throughput capacity are effectively improved.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of time-division long-term evolution LTE system, in particular to a method for determining the number of OFDM symbols occupied by a control channel, and a device for determining the number of OFDM symbols occupied by a control channel. Background technique [0002] LTE (Time Division Long Term Evolution) is the long-term evolution of the Universal Mobile Telecommunications System (UMTS) technology led by the 3rd Generation Partnership Project (3GPP). The data download capability is regarded as the mainstream technology in the evolution from 3G to 4G. [0003] In order to support effective data transmission, the LTE system defines control channels in addition to traffic channels. The control channel needs to transmit physical layer signals or information that cannot be effectively, quickly, and conveniently executed by the upper layers of the LTE system, such as resource blocks, mod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00
Inventor 史文格
Owner DATANG MOBILE COMM EQUIP CO LTD
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