US 9,883,497 B2Granted

Control signaling transmission and detection methods, base station, and terminal

AssigneeZte Corporation

InventorsYijian Chen, Bo Dai, Zhisong Zuo, Jun Xu

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Abstract

A control signaling transmission method, a control signaling detection method, a terminal, and a base station are provided. The transmission method includes: a base station determining an enhanced Physical Downlink Control Channel (ePDCCH) resource region of the terminal in a current subframe according to at least one of multiple parameters, and transmitting control signaling to the terminal on some or all of the resources in the ePDCCH resource region. The above technical scheme can adapt to the dynamically-changing transmission capabilities of subframes, improves the transmission performance of the control signaling on an ePDCCH, increases the accuracy of the terminal in searching for the control signaling, and conserves terminal consumption. Therefore, the present document has a great industrial applicability.

Claims20

Dependent claims

A control signaling transmission method, comprising:

determining, by a base station, a plurality sets of candidate enhanced Physical Downlink Control Channel (ePDCCH) resource regions;
notifying, by the base station, one set of candidate ePDCCH resource regions and a preset rule to the terminal, to make the terminal determine one or more other sets of candidate ePDCCH resource regions according to the notified set of candidate ePDCCH resource regions and the preset rule, wherein the determined one or more other sets of candidate ePDCCH resource regions and the notified set of candidate ePDCCH resource regions in the terminal are the same with the plurality sets of candidate ePDCCH resource regions in the base station;
determining, by the base station, one set of ePDCCH resource regions of the terminal in a current subframe from the plurality sets of candidate ePDCCH resource regions according to at least one of the following parameters;
and
transmitting, by the base station, control signaling to the terminal on some or all of the resources in the determined one set of the ePDCCH resource regions;
so that, after the terminal receives the control signaling transmitted by the base station, the terminal detects the received control signaling in the same set of ePDCCH resource regions which is selected from the received one set of candidate ePDCCH resource regions and the determined one or more other sets of candidate ePDCCH resource regions by the terminal according to the same parameter(s);
and
wherein, the parameters include:
a number of Resource Elements (REs) available for carrying control information in a resource block in the current subframe;
a number of REs available for carrying control information in an enhanced Control Channel Element (eCCE) in the current subframe;
a number of REs available for carrying control information in an enhanced Resource Element Group (eREG) in the current subframe;
an aggregation level configuration needed to be detected by the terminal;
a type of an ePDCCH transmission mode for transmitting the control signaling to the terminal, comprising:
a single beamforming transmission mode, a spatial diversity transmission mode, a centralized transmission mode, a distributed transmission mode;
a subframe type of the current subframe;
a pilot transmission condition in the current subframe;
a synchronization signal transmission condition in the current subframe;
a Physical Broadcast Channel (PBCH) transmission condition in the current subframe;
and a subframe number of the current subframe.

16 more elements

A base station, comprising a processor and a storage device, wherein the storage device stores processor-executable programs, and the programs comprise an enhanced Physical Downlink Control Channel (ePDCCH) resource region determination module and a transmission module, wherein,

the ePDCCH resource region determination module is configured to:
determine a plurality sets of candidate ePDCCH resource regions,
notify one set of candidate ePDCCH resource regions and a preset rule to the terminal, to make the terminal determine one or more other sets of candidate ePDCCH resource regions according to the notified set of candidate ePDCCH resource regions and the preset rule, wherein the determined one or more other sets of candidate ePDCCH resource regions and the notified set of candidate ePDCCH resource regions in the terminal are the same with the plurality sets of candidate ePDCCH resource regions in the base station, and
determine one set of ePDCCH resource regions of the terminal in a current subframe from the plurality sets of candidate ePDCCH resource regions according to at least one of the following parameters;
and
the transmission module is configured to transmit control signaling to the terminal on some or all of the resources in the determined one set of the ePDCCH resource regions;
so that, after the terminal receives the control signaling transmitted by the base station, the terminal detects the received control signaling in the same set of ePDCCH resource regions which is selected from the received one set of candidate ePDCCH resource regions and the determined one or more other sets of candidate ePDCCH resource regions by the terminal according to the same parameter(s), and
wherein, the parameters include:
a number of Resource Elements (REs) available for carrying control information in a resource block in the current subframe;
a number of REs available for carrying control information in an enhanced Control Channel Element (eCCE) in the current subframe;
a number of REs available for carrying control information in an enhanced Resource Element Group (eREG) in the current subframe;
an aggregation level configuration needed to be detected by the terminal;
a type of an ePDCCH transmission mode for transmitting the control signaling to the terminal, comprising:
a single beamforming transmission mode, a spatial diversity transmission mode, a centralized transmission mode, a distributed transmission mode;
a subframe type of the current subframe;
a pilot transmission condition in the current subframe;
a synchronization signal transmission condition in the current subframe;
a Physical Broadcast Channel (PBCH) transmission condition in the current subframe;
and a subframe number of the current subframe.

16 more elements

A control signaling detection method, wherein,

receiving, by a terminal, one set of candidate ePDCCH resource regions and a preset rule from a base station, and determining one or more other sets of candidate ePDCCH resource regions according to the received set of candidate ePDCCH resource regions and the preset rule, wherein the determined one or more other sets of candidate ePDCCH resource regions and the received set of candidate ePDCCH resource regions in the terminal are the same with a plurality sets of candidate ePDCCH resource regions in the base station;
determining, by the terminal, one set of ePDCCH resource regions of the terminal in a current subframe from the plurality sets of candidate ePDCCH resource regions according to at least one of the following parameters;
and
detecting, by the terminal, control signaling on some or all of the resources in the determined one set of ePDCCH resource regions which is same as a set of ePDCCH resource region determined by the base station according to the same parameter(s);
wherein, the parameters include:
a number of Resource Elements (REs) available for carrying control information in a resource block in the current subframe;
a number of REs available for carrying control information in an enhanced Control Channel Element (eCCE) in the current subframe;
a number of REs available for carrying control information in an enhanced Resource Element Group (eREG) in the current subframe;
an aggregation level configuration needed to be detected by the terminal;
a type of an ePDCCH transmission mode for transmitting the control signaling to the terminal, comprising:
a single beamforming transmission mode, a spatial diversity transmission mode, a centralized transmission mode, a distributed transmission mode;
a subframe type of the current subframe;
a pilot transmission condition in the current subframe;
a synchronization signal transmission condition in the current subframe;
a Physical Broadcast Channel (PBCH) transmission condition in the current subframe;
and a subframe number of the current subframe.

13 more elements

A terminal, comprising a processor and a storage device, wherein the storage device stores processor-executable programs, and the programs comprise an enhanced Physical Downlink Control Channel (ePDCCH) resource region determination module and a detection module, wherein,

the ePDCCH resource region determination module is configured to:
receive one set of candidate ePDCCH resource regions and a preset rule from a base station, and determine one or more other sets of candidate ePDCCH resource regions according to the received set of candidate ePDCCH resource regions and the preset rule, wherein the determined one or more other sets of candidate ePDCCH resource regions and the received set of candidate ePDCCH resource regions in the terminal are the same with a plurality sets of candidate ePDCCH resource regions in the base station;
determine one set of ePDCCH resource regions of the terminal in a current subframe from the plurality sets of candidate ePDCCH resource regions according to at least one of the following parameters;
and
the detection module is configured to detect control signaling on some or all of the resources in the determined one set of ePDCCH resource regions which is same as a set of ePDCCH resource region determined by the base station according to the same parameter(s);
wherein, the parameters include:
a number of Resource Elements (REs) available for carrying control information in a resource block in the current subframe;
a number of REs available for carrying control information in an enhanced Control Channel Element (eCCE) in the current subframe;
a number of REs available for carrying control information in an enhanced Resource Element Group (eREG) in the current subframe;
an aggregation level configuration needed to be detected by the terminal;
a type of an ePDCCH transmission mode for transmitting the control signaling to the terminal, comprising:
a single beamforming transmission mode, a spatial diversity transmission mode, a centralized transmission mode, a distributed transmission mode;
a subframe type of the current subframe;
a pilot transmission condition in the current subframe;
a synchronization signal transmission condition in the current subframe;
a Physical Broadcast Channel (PBCH) transmission condition in the current subframe;
and a subframe number of the current subframe.

14 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/386,881Filed 2 Aug 2013
Priority: CN 2012 1 02754293 Aug 2012
Published: US 2015/0304991 A122 Oct 2015
Granted: 30 Jan 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

H04W 72/23
Control channels or signalling for resource management: in the downlink direction of a wireless link, i.e. towards a terminal
H04L 5/0048
Arrangements for allocating sub-channels of the transmission path: allocation of pilot signals, i.e. of signals known to the receiver
H04L 5/0053
Arrangements for allocating sub-channels of the transmission path: allocation of signalling, i.e. of overhead other than pilot signals
H04L 5/22
Arrangements affording multiple use of the transmission path: using time-division multiplexing

Family

US 2015/0304991 A1Pre-grant publication · published 22 Oct 2015
US 9,883,497 B2This patent

From the US filing history. Foreign family members aren’t listed.

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