Method for sending and detecting downlink control information, sending terminal and receiving terminal

A technology for controlling information and detection methods, applied in the field of communication

Active Publication Date: 2014-06-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In view of this, the main purpose of the present invention is to provide a method for sending and detecting downlink control information, a sending end and a receiving end, so as to solve the detection problem of ePDCCH

Method used

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  • Method for sending and detecting downlink control information, sending terminal and receiving terminal
  • Method for sending and detecting downlink control information, sending terminal and receiving terminal
  • Method for sending and detecting downlink control information, sending terminal and receiving terminal

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Experimental program
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Effect test

specific Embodiment approach 2

[0231] The second specific embodiment is: the starting position of the UE-specific search space corresponding to each component carrier adopts the following configuration:

[0232] The starting position on subframe k is: Y k =(A·Y k-1 ) mod D,

[0233] Among them, Y -1 =n RNTI +s×2 16 ≠0, A=39827, D=65537, Indicates rounding down, n s Indicates the slot number in a radio frame, n RNTI Indicates the corresponding RNTI, s indicates the resource set index;

specific Embodiment approach 3

[0234] The third specific embodiment is: the starting position of the UE-specific search space corresponding to each component carrier adopts the following configuration:

[0235] The starting position of resource set s on subframe k is: or or B is 1 or Y k =(A·Y k-1 )modD,

[0236] Among them, Y -1 =n RNTI ≠0, A=39827, D=65537, Indicates rounding down, n s Indicates the slot number in a radio frame, n RNTI Indicates the corresponding RNTI.

[0237] Preferably, the starting positions of the UE-specific search spaces corresponding to the same resource set index of the component carrier are respectively configured, and the first specific implementation method is:

[0238] The starting position on subframe k is: Y k =(A·Y k-1 ) mod D,

[0239] Among them, Y -1 =n RNTI ≠0, A=39827, 39829, 39825, 39823, 39821, 39831 or 39837, D=65537, Indicates rounding down, n s Indicates the slot number in a radio frame, n RNTI Indicates the corresponding RNTI; differ...

specific Embodiment approach 1

[0269] Embodiment 1: The predefined information includes a subframe index, specifically:

[0270] Determine the ARO range according to the position h of the downlink subframe index k where the ePDCCH is located in the downlink subframe window corresponding to the uplink subframe where the PUCCH is located; h starts numbering from 0;

[0271] The ARO range corresponds to n sets, where n is 4, and the specific determination method is as follows:

[0272] h is 0, then ARO is {2, -1, 0, -2},

[0273] h is 1, then ARO is {2, 0, -1, -N eCCE(k-1，j)} or {2, 0, -2, -N eCCE(k-1，j)},

[0274] h is 2, then ARO is {2, 0, -N eCCE(k-2，j) -N eCCE(k-1，j) ,-N eCCE(k-1，j)},

[0275] h is 3, then ARO is {2, 0, -N eCCE(k-3，j) -N eCCE(k-2，j) -N eCCE(k-1，j) ,-N eCCE(k-2，j) -N eCCE(k-1， j)};

[0276] Alternatively, the ARO range corresponds to n sets, where n is 3, and the specific determination method is as follows:

[0277] The ARO range corresponding to the first subframe in the H s...

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Abstract

The invention discloses a method for sending and detecting downlink control information, a sending terminal and a receiving terminal. The method comprises the following steps of according to the preset interval, determining a special searching space of a user terminal (UE (user equipment)) of an ePDCCH (enhanced physical downlink control channel) carrying downlink control information, wherein the preset interval is determined according to the number of candidate positions of a component carrier with a corresponding aggregation level in a corresponding resource set, or according to the number of candidate positions of the component carrier with the corresponding aggregation level in the corresponding resource set or the number of dispatched component carriers, or according to the number of candidate positions of the component carrier with the corresponding aggregation level in the corresponding resource set or the number of configured component carriers; detecting the downlink control information in the physical resource corresponding to the special searching space of the UE. The method can solve the detecting problem of the ePDCCH.

Description

technical field [0001] The present invention relates to downlink control information detection technology in the communication field, in particular to a method for sending and detecting downlink control information, a sending end and a receiving end. Background technique [0002] A Physical Downlink Control Channel (PDCCH, Physical Downlink Control Channel) is defined in a Long Term Evolution (LTE, Long Term Evolution) system. The PDCCH is used to carry downlink control information (DCI, Downlink Control Information). The physical resources transmitted by the PDCCH are in units of Control Channel Elements (CCE, Control Channel Element), and the size of a CCE is 9 Resource Element Groups (REG, Resource Element Group ), that is, 36 resource elements (Resource Element), and one PDCCH occupies 1, 2, 4 or 8 CCEs. For the four PDCCHs occupying 1, 2, 4, and 8 CCEs, tree-like aggregation (Aggregation) is adopted, that is, a PDCCH occupying 1 CCE can start from any CCE position, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04L27/26
CPCH04W80/00H04L5/001H04L5/0053H04L5/0055H04L1/0046H04L1/0072H04L1/00H04W72/23
Inventor 戴博陈艺戬左志松
Owner ZTE CORP
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