Descending control channel assignment and blind test method

A technology of control channel and allocation method, which is applied in blind detection of downlink control channel by user equipment, design of downlink control information format, design of downlink control channel of LTE-Advanced system, and can solve problems such as waste of resources

Inactive Publication Date: 2010-06-09
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to effectively solve the problem of resource waste that may be caused by multi-segment PDCCH allocati

Method used

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  • Descending control channel assignment and blind test method
  • Descending control channel assignment and blind test method
  • Descending control channel assignment and blind test method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0124] Implementation example one:

[0125] An improved DCI format is introduced for LTE-Advanced user equipment to perform blind detection on the basic carrier frequency. The improved method is to add a field to the originally defined DCI format to indicate the carrier frequency of the user's PDCCH information. The originally defined DCI format may be the DCI format defined in LTE, and / or the DCI format newly introduced by the LTE-Advanced system for non-basic carrier frequency blind detection. In this example, the DCI format defined in LTE is used as the originally defined DCI format. Such as figure 1 As shown, the system bandwidth includes 5 carrier frequencies. Each DCI format needs to add a 5-bit field. The corresponding improved DCI formats are named Format 0', Format 1', Format 1A', Format 1B', Format 1C ', Format 1D', Format2' and Format 2A'.

[0126] In order to better explain the improved DCI format, the following takes Format 1A' as an example to describe each field ...

Example Embodiment

[0176] Implementation example two:

[0177] An improved DCI format is introduced for LTE-Advanced user equipment to perform blind detection on the basic carrier frequency. The improved method is to add a field to the originally defined DCI format to indicate the carrier frequency of the user's PDCCH information. The originally defined DCI format may be the DCI format defined in LTE, and / or the DCI format newly introduced by the LTE-Advanced system for non-basic carrier frequency blind detection. In this example, the DCI format defined in LTE is used as the originally defined DCI format. Such as figure 1 As shown, the system bandwidth includes 5 carrier frequencies, and each DCI format needs to add a 5-bit field, and the corresponding improved DCI formats are named Format0", Format 1", Format 1A", Format 1B", Format 1C" , Format 1D”, Format 2” and Format 2A”.

[0178] In order to better explain the improved DCI format, the following takes Format 1A" as an example to describe eac...

Example Embodiment

[0230] Implementation example three:

[0231] On the basis of the above-mentioned improved DCI format, a brand-new DCI format is introduced for LTE-Advanced user equipment to perform blind detection on the basic carrier frequency, which is named Format X in this example. This format contains only one PDCCH index information, 4 bits.

[0232] The correspondence between the DCI format and the transmission mode used by the LTE-Advanced user equipment for blind detection on the basic carrier frequency can be described in Table 4 or Table 5 below:

[0233] Table 4

[0234] Transmission mode

[0235] table 5

[0236] Transmission mode

[0237] The above table is only used as an example, and the present invention is not limited to the above relationship. In the actual system, it can be promoted according to relevant definitions. For example, the transmission mode of the LTE-Advanced system may not be limited to the above seven modes.

[0238] The process of eNB allocating PDCCH for LTE...

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Abstract

The invention provides a design and a test method for a descending control channel in an LTE-Advanced system, particularly a descending control channel assignment method for a base station and a descending control channel blind test method for user equipment. PDCCH index information is introduced to a general DCI format according to the invention, which is used for the blind test on basal carrierfrequency, the user equipment realizes the rapid effective blind test course through the PDCCH index information, and the frequency of the blind test and the required power consumption are effectively reduced.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to the design of the downlink control channel of the LTE-Advanced system, the design of the format of the downlink control information, and a method for user equipment to perform blind detection on the downlink control channel. According to the present invention, a downlink control channel (PDDCH) allocation method for base station (eNB) and a downlink control channel (PDDCH) blind detection method for user equipment (UE) are proposed. Background technique [0002] Ericsson discussed four possible designs of four different downlink control channels in the LTE-Advanced system at the 3GPP TSG RAN WGl 53bis meeting (R1-082468, Carrier aggregation in LTE-Advanced, 3GPP TSG RANWGl 53bis, Warsaw, Poland , June 30-July 4, 2008). The first solution is to independently allocate a PDCCH on each component carrier, which is used to indicate the allocation information of the PDSCH ...

Claims

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Application Information

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IPC IPC(8): H04W28/06H04W72/12H04L1/00
CPCY02D30/70
Inventor 黄磊刘仁茂丁铭陈晨孙国林张应余
Owner SHARP KK
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