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EPDCCH common search space design for one or more carrier types

A common search space and type technology, which can be used in multiple use of transmission paths, sub-channel allocation of transmission paths, digital transmission systems, etc., and can solve problems such as inappropriate signaling

Active Publication Date: 2015-11-18
INTERDIGITAL PATENT HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these carrier types, signaling such as the downlink control channel signaling provided may not be appropriate

Method used

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  • EPDCCH common search space design for one or more carrier types
  • EPDCCH common search space design for one or more carrier types
  • EPDCCH common search space design for one or more carrier types

Examples

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Embodiment Construction

[0020] A detailed description of the illustrative embodiments will now be described with reference to the various figures. While this description provides specific examples of possible implementations, it should be noted that the details are intended to be illustrative and not in any way limiting the scope of the application. As used herein, in one or more implementations, a user equipment (UE) may, for example, be referred to as a wireless transmit / receive unit (WTRU).

[0021] Enhanced Physical Downlink Control Channel (EPDCCH) (eg, in Long Term Evolution (LTE) grant release 11) may be used to obtain frequency-domain Inter-Cell Interference Coordination (ICIC), and beamforming gain. EPDCCH, ePDCCH and E-PDCCH may be used interchangeably herein. Enhanced Resource Element Group (EREG) and Enhanced Control Channel Element (ECCE) may be interchangeably used as EREG and ECCE, respectively.

[0022] For example, in LTE Rel-11, EPDCCH resources for User Equipment (UE) Specific Se...

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Abstract

Embodiments contemplate enhanced physical downlink control channel (EPDCCH). A user equipment (UE) or a wireless transmit / receive unit (WTRU) may receive a first type (e.g., type 1) EPDCCH common search space (CSS) subframe for example is a subset of subframes. The UE or WTRU may monitor first type downlink control information (DCI), for example perhaps within the first type EPDCCH CSS subframe, among other scenarios. A broadcast channel (e.g. MIB) may be received in the first type EPDCCH CSS. The UE or the WTRU may receive configuration information for a second type (e.g., type 2) EPDCCH CSS, for example from the first type EPDCCH CSS. A system information block (SIB) may be received in the second type EPDCCH CSS. The UE or the WTRU may monitor a second type DCI, for example perhaps in the second type EPDCCH CSS.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Patent Application No. 61 / 808,095, filed April 3, 2013, entitled "EPDCCHCommonSearchSpaceDesignForNewCarrierType," the entire contents of which are hereby incorporated by reference for all purposes as if fully set forth herein . Background technique [0003] Communication systems (eg, LTE / LTE-evolved systems) may provide multiple antennas, multiple component carriers, and / or quasi-collated antenna ports to support transmission. The multiple antennas, multiple component carriers, and / or quasi-aligned antenna ports may be provided for different purposes including peak system throughput enhancement, extended cell coverage, higher Doppler support, and the like. In such a communication system, different carrier types may be provided. In these carrier types, signaling such as the provided downlink control channel signaling may not be appropriate. Contents of the inven...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04W48/10H04W48/12
CPCH04L5/0053H04L5/0048H04L5/0073H04W72/23
Inventor M-I·李N·玉木
Owner INTERDIGITAL PATENT HLDG INC
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