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Method and device for enhancing PDCCH in carrier polymerization

A carrier and carrier indication technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as increased blind detection times, large scheduling restrictions, etc., to reduce load size, save air interface resources, and improve air interface resource utilization efficiency Effect

Active Publication Date: 2016-10-05
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the relevant scheme does not consider the scenario where the number of TBs that may be carried on a serving cell changes—the load size of DCI may change accordingly, which will lead to an increase in the number of blind detections
Based on the above related schemes, an intuitive idea is that the number of TB carried by each serving cell in a DCI scheduling is fixed, and the above intuitive idea will bring large scheduling restrictions

Method used

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  • Method and device for enhancing PDCCH in carrier polymerization
  • Method and device for enhancing PDCCH in carrier polymerization
  • Method and device for enhancing PDCCH in carrier polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] Embodiment 1 illustrates the flow chart of downlink wireless signal transmission, as shown in the attached figure 1 shown. attached figure 1 In , base station N1 is the maintaining base station of the serving cell of UE U2, wherein the steps in block F1 are optional steps.

[0112] for base station N1 , the first DCI is sent in step S11, and the wireless signal is sent in K1 carriers according to the scheduling information in step S13. for UE U2 , receiving the first DCI in step S21, and receiving wireless signals on the K1 carriers according to the scheduling information in step S23.

[0113] In Embodiment 1, the first DCI includes carrier indications of the K1 carriers and at least one of the following:

[0114] -. The first information: the location information of the second DCI, the location information includes one or more of {the carrier index of the bearer carrier, the subframe index of the transmission subframe, and the position in the subframe}

[0115]...

Embodiment 2

[0120] Embodiment 2 illustrates a schematic diagram of a PDCCH candidate / EPDCCH candidate in the present invention, as shown in the attached figure 2 shown. attached figure 2 , one candidate position corresponds to one PDCCH candidate or one EPDCCH candidate.

[0121] In Embodiment 2, the position in the subframe in the present invention corresponds to the attached figure 2 A target candidate position in , that is, the intra-subframe position is the index of the target candidate position in the set of M candidate positions {candidate position 1-M}.

[0122] The M candidate positions respectively correspond to all M PDCCH candidates and / or EPDCCH candidates monitored by the UE when performing blind detection for the second DCI on the bearer carrier of the second DCI and the transmission subframe of the second DCI.

[0123] As a sub-embodiment 1 of Embodiment 2, the UE is not configured with an EPDCCH on a carrier carrying the second DCI and a transmission subframe of the ...

Embodiment 3

[0128] Embodiment 3 illustrates a schematic diagram of the first DCI in the present invention, as attached image 3 shown. attached image 3 Among them, the first DCI is composed of carrier indications of K1 carriers, second information, common scheduling information, carrier-specific scheduling information and TB-specific scheduling information. The second information includes K3 bits, which correspond to K3 qualified carriers among the K1 carriers one by one, and one bit is used to indicate whether the number of TBs scheduled by the first DCI on one carrier is 1 or 2, The K3 is a positive integer not greater than K1.

[0129]In Embodiment 3, the first DCI does not include the first information. The total number of TBs scheduled by the first DCI (that is, the total number of TBs indicated by the second information) is L, where L is not less than K1 and not greater than K1+K3. The carrier-specific scheduling information includes K1 groups of first subinformation, correspon...

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Abstract

The present invention discloses a method and device for enhancing PDCCH in carrier polymerization. In an embodiment, in the step 1, UE receives a first DCI and a second DCI, the first DCI includes carrier instructions of K1 carriers, and the first information and the second information; and in the step 2, wireless signals are received on the K1 carriers according to the scheduling information in the second DCI, wherein K1 is a positive integer, the first information includes a position in a subframe, and the second information includes the number of scheduled TB on each carrier in accordance with the condition in the K1 carriers. The number of times of the maximum blind detection executed by the UE is reduced, and the problem is avoided that the size of the target DCI load is too big.

Description

technical field [0001] The present invention relates to a scheduling signaling scheme in a wireless communication system, in particular to a method and device for a PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) based on Long Term Evolution (LTE-Long Term Evolution). Background technique [0002] In the traditional 3rd Generation Partnership Project (3GPP–3rd Generation Partner Project) LTE system, PDCCH has the following characteristics: [0003] -. A DCI (Downlink Control Information, downlink control information) can only schedule the transmission or reception of wireless signals on one target serving cell [0004] -. When the transmission mode assigned by the base station to the UE (User Equipment, user equipment) can support up to 2 TB (Transport Block, transmission block), the UE determines the current DCI scheduled by the detected DCI format (ie, the load size) Is the number of TB 1 or 2 [0005] -. For each DCI payload size (Payload Si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12H04L5/00
Inventor 张晓博
Owner SHANGHAI LANGBO COMM TECH CO LTD
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