Method for receiving and transmitting information on physical downlink control channel and equipment thereof

A technology for physical downlink control and information transmission, which is applied in wireless communication, electrical components, etc., and can solve the problem that there is no specific solution for search space design in enhanced PDCCH

Inactive Publication Date: 2011-08-31
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The disadvantage of the existing technology is that the existing disclosed technology does not provide a specific solution for the design of the search space in the enhanced PDCCH

Method used

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  • Method for receiving and transmitting information on physical downlink control channel and equipment thereof
  • Method for receiving and transmitting information on physical downlink control channel and equipment thereof
  • Method for receiving and transmitting information on physical downlink control channel and equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Example 1, Figure 10 PDCCH search space for UL grant with different time-frequency resource aggregation levels Figure 1 , the time-frequency granularity of the enhanced PDCCH resource shown in the figure is as follows Figure 7 As shown, the specific allocation is as follows Figure 10 Shown can be:

[0075] (1) If the aggregation level is 1, the PDCCH resource in the enhanced DCCH cluster occupied by the corresponding UL grant is {2};

[0076] (2) If the aggregation level is 2, the corresponding resources are {3, 4};

[0077](3) If the aggregation level is 4, the corresponding resources are {5, 6, 7, 8};

[0078] (4) If the system supports and exists an aggregation level of 8, the corresponding resources are {9, 10, 11, 12, 13, 14, 15, 16}.

Embodiment 2

[0079] Embodiment 2, the time-frequency granularity of the enhanced PDCCH resource is as follows Figure 7 As shown, the specific can be:

[0080] (1) If the aggregation level is 1, the PDCCH resource in the enhanced DCCH cluster occupied by the corresponding UL grant is {2};

[0081] (2) If the aggregation level is 2, the corresponding resources are {3, 4} and {5, 6};

[0082] (3) If the aggregation level is 4, the corresponding resources are {3, 4, 5, 6} and {5, 6, 7, 8};

[0083] (4) If the system supports and exists an aggregation level of 8, the corresponding resources are {5, 6, 7, 8, 9, 10, 11, 12} and {9, 10, 11, 12, 13, 14, 15 , 16}.

[0084] You can also put the UL grant in the second slot of the enhanced PDCCH cluster, Figure 11 PDCCH search space for UL grant with different time-frequency resource aggregation levels Figure II , as shown in the figure, an implementation can be as follows:

[0085] (1) If the aggregation level is 1, the PDCCH resource in the ...

Embodiment 3

[0094] For example, if two enhanced PDCCH clusters are configured in the system, the size of each cluster is 8 PRBs, and the aggregation level defined by the system is {1, 2, 4, 8}, then the number of blind detections for UE can be defined as :

[0095] A. DL grant: 4*2*2=16, 4 means that there are 4 candidate PDCCH channel resources in a cluster, the first 2 means that two DCI formats need to be blindly detected, and the second 2 means two cluster.

[0096] B. The number of times of blind detection in UL grant can be defined as follows according to the definition of different search spaces:

[0097] (1) The UL grant search space based on Embodiment 1.

[0098] UL grant in the case of supporting UL-MIMO: 4*2*2=16, 4 means that there are 4 candidate PDCCH channel resources in a cluster, the first 2 means that two DCI formats need to be blindly detected, The second 2 means two clusters.

[0099] UL grant when UL-MIMO is not supported: 4*1*2=8, 4 means that there are 4 candid...

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Abstract

The invention discloses a method for receiving and transmitting information on a physical downlink control channel and equipment thereof. The method comprises the following steps: the resource position of an enhanced physical downlink control channel cluster is indicated to user equipment by a base station; scheduling information is transmitted to the user equipment on the resource position of a physical downlink control channel cluster by the base station; the resource position of the enhanced physical downlink control channel cluster is determined by the user equipment according to the indication of the base station; and blind check carried out on the resource position of the enhanced physical downlink control channel cluster by the user equipment to receive the scheduling information transmitted by the base station to the user equipment. The invention can effectively provide the capacity of the physical downlink control channel, simultaneously, can effectively improve the utilization rate of the resource of the enhanced physical downlink control channel.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a method and equipment for sending and receiving information on a physical downlink control channel. Background technique [0002] figure 1 It is a schematic diagram of the multiplexing relationship between the control area and the data area in a downlink subframe. In the figure, Nc subcarriers is the number of subcarriers available to the system, and Nc subcarriers. As shown in the figure, in LTE (Long Term Evolution, long-term evolution) In the system, the downlink control channel PDCCH (Physical Downlink Control Channel, physical downlink control channel) is sent in each wireless subframe, and forms a TDM (Time Division Multiplexing) with downlink data PDSCH (Physical Downlink Shared Channel, physical downlink shared channel). , time-division multiplexing) multiplexing relationship. PDCCH is sent through the first N OFDM (Orthogonal Frequency Division Multiplex, Orthogona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
CPCH04W72/1278H04W72/20
Inventor 赵锐沈祖康潘学明肖国军
Owner CHINA ACAD OF TELECOMM TECH
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