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Method and system for detecting public search space of relay node

A public search space and relay node technology, applied in multi-frequency code systems, network traffic/resource management, electrical components, etc., can solve the problem of no blind detection, etc., and achieve less blind detection delay, low complexity, and improved The effect of work efficiency

Inactive Publication Date: 2014-04-30
NANTONG QIWU AGRI PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, it is only considered that the public search space of RN must exist, but there is no specific plan for its blind detection

Method used

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  • Method and system for detecting public search space of relay node
  • Method and system for detecting public search space of relay node
  • Method and system for detecting public search space of relay node

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] In this embodiment, the common search space of the RN consists of a set of PRBs or PRB pairs, where the eNB reserves 15 PRBs or PRB pairs semi-statically for the R-PDCCH, and the eNB reserves 15 PRBs semi-statically for the R-PDCCH Or the PRB pair is determined by the upper layers of the eNB according to the traffic volume. The eNB and the RN determine that the starting position for the RN to detect is the first PRB or PRB pair among the 15 PRBs or PRB pairs, that is, PRB0, through the interaction of high-level signaling, where the information carried by the common search space is The public control information itself, where the public control information includes at least one of a system message, a random access response message, and a paging message.

[0073] Since the public search space carries the public control information itself, the eNB will first inform the RN of which one or several of the public control information is a system message, a random access respons...

Embodiment 2

[0080] In this embodiment, the common search space of the RN consists of a set of PRBs or PRB pairs, where the eNB reserves 10 PRBs or PRB pairs semi-statically for the R-PDCCH, and the eNB reserves 10 PRBs semi-statically for the R-PDCCH Or the PRB pair is determined by the upper layers of the eNB according to the traffic volume. The eNB and the RN determine that the starting position for the RN to detect is the third PRB or PRB pair among the 10 PRBs or PRB pairs, that is, PRB2, through the interaction of high-level signaling, where the information carried by the common search space is The public control information itself, where the public control information includes at least one of a system message, a random access response message, and a paging message.

[0081] Since the public search space carries the public control information itself, the eNB will first inform the RN of which one or several of the public control information is a system message, a random access respons...

Embodiment 3

[0088] In this embodiment, the common search space of the RN consists of a set of PRBs or PRB pairs, where the eNB reserves 20 PRBs or PRB pairs semi-statically for the R-PDCCH, and the eNB reserves 20 PRBs semi-statically for the R-PDCCH Or the PRB pair is determined by the upper layers of the eNB according to the traffic volume. The eNB and the RN determine that the starting position for the RN to detect is the sixth PRB or PRB pair among the 20 PRBs or PRB pairs, that is, PRB5, through the interaction of high-level signaling, where the information carried by the common search space is Scheduling information.

[0089] Since the common search space carries scheduling information, the eNB does not need to inform the RN of which one or more of the common control information is a system message, a random access response message, and a paging message through high-layer signaling;

[0090] In this embodiment, it can be determined that the combination forms for blind detection of ...

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Abstract

The present invention provides a method and system for detection of the common search space of a relay node. The method comprises: determining the initial location for detecting the common search space; and starting from the initial location, performing blind detection of the common search space according to different forms of combination. The method and system for common search space detection provided in the present invention are very suitable for RN. Not only do they ensure lower complexity for the RN during blind detection, but they are also able to rapidly detect common control information or scheduling information, with relatively fewer blind detection delays, improving the working efficiency of mobile communication systems and fully utilizing the relay link resources.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method and system for detecting a common search space of a relay node (Relay Node, RN). Background technique [0002] The Long Term Evolution (LTE) system, the Long Term Evolution Advanced (LTE-Advanced, LTE-A) system and the International Mobile Telecommunication Advanced (IMT-Advanced) system all use Orthogonal Frequency Division Multiplexing (Orthogonal Based on Frequency Division Multiplexing (OFDM) technology, the OFDM system is a time-frequency two-dimensional data form. 1 subframe (subframe) is composed of 2 slots (slots), when the normal cyclic prefix (Cyclic Prefix, CP), each slot is composed of 7 OFDM symbols; when the CP is extended, each slot is composed of 6 OFDM symbols . Wherein, the downlink control channel (Physical Downlink Control Channel, PDCCH) is located in the first 1 or 2 or 3 or 4 OFDM symbols of each subframe. [0003] In the LT...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/00H04W28/16H04L27/26
CPCH04W84/047H04W74/00
Inventor 袁明毕峰杨瑾梁枫吴栓栓
Owner NANTONG QIWU AGRI PROD CO LTD