Information detection and transmission methods and equipment

A technology for detecting information and configuring information, which is applied in wireless communication, signaling distribution, space transmit diversity, etc. to improve reception performance, utilization efficiency, and flexibility.

Active Publication Date: 2013-02-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the prior art, the UE can only detect the PDCCH based on the non-precoding method and according to the CRS

Method used

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  • Information detection and transmission methods and equipment
  • Information detection and transmission methods and equipment
  • Information detection and transmission methods and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] see image 3, which is a flow chart of a method for detecting information according to an embodiment of the present invention. This process is used for a user equipment terminal, and may specifically include:

[0041] Step 301, the UE obtains at least one antenna port configuration information occupied by the D-PDCCH configured on the base station side;

[0042] In a possible embodiment, the antenna port configuration information includes at least antenna port information, scrambling ID information and codeword information of UE-specific reference signals corresponding to the antenna ports. Wherein, the antenna port information includes the antenna port number and the number of antenna ports; the scrambling code ID information includes the scrambling code ID number; the codeword information includes the codeword number and the number of codewords.

[0043] In another possible embodiment, in addition to the above information, the antenna port configuration information m...

Embodiment 2

[0159] According to the previous introduction, in the existing LTE system, the minimum time unit for eNB scheduling is a subframe, each subframe includes two time slots, and each time slot includes 7 symbols. For a UE scheduled on a subframe, the subframe will contain the UE's Physical Downlink Control Channel (PDCCH). The PDCCH is interleaved in the frequency domain and spread to the entire system bandwidth. In the time domain , carried in the first n symbols of a subframe, n can be one of 1, 2, 3, or one of 2, 3, 4 (for the case where the system bandwidth is 1.4MHz), specifically by The two bits carried in the PCFICH are used to notify that the n symbols indicate the control channel region. The PDCCH can schedule the downlink data channel PDSCH, and the PDCCH and the scheduled PDSCH are in the same subframe, the PDCCH occupies the first few symbols, and the PDSCH immediately occupies the last few symbols.

[0160] When the UE performs detection, it first detects the Physica...

Embodiment 3

[0183] D-PDCCH takes RB as the basic unit of aggregation level, and 14 symbols in one subframe are RB pairs in the frequency domain. The number of time domain symbols occupied by two RBs of two slots in an RB pair is 7, but the number of symbols occupied by the control region is removed from the first slot, and the remaining symbols that can transmit D-PDCCH will be less than 7. If the control area occupies 3 symbols, only 4 symbols in the first slot can be used to transmit D-PDCCH, so compared with 7 symbols in the second slot, the D-PDCCH transmitted in each RB The information of the PDCCH will be very unbalanced.

[0184] Based on the above technical problem, an embodiment of the present invention provides a method for sending control information, so as to solve the problem of unbalanced number of symbols in two time slots on one RB pair, and balance the performance of D-PDCCH.

[0185] A method for sending control information, which specifically includes:

[0186] In a s...

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Abstract

The embodiment of the invention discloses an information detection method, information detection equipment, an information transmission method and information transmission equipment. The information detection method comprises the following steps that: user equipment (UE) acquires at least one kind of antenna port configuration information occupied by a dedicated physical downlink control channel (D-PDCCH) configured on an evolved NodeB (eNB) side; the UE determines a searching space of the D-PDCCH; and the UE detects the D-PDCCH in the searching space according to the antenna port configuration information. According to the embodiment of the invention, the UE can detect the D-PDCCH, so that data transmission is ensured. Moreover, the time frequency resource-based PDCCH blind detection of the UE in the conventional system is expanded to a spatial dimension, namely an antenna port, so that the utilization efficiency of resources is improved, and the D-PDCCH can be detected within the spatial dimension.

Description

technical field [0001] The present invention relates to a wireless communication system, in particular to a method and device for detecting and transmitting information. Background technique [0002] In an existing Long Term Evolution (LTE) system, the minimum time unit scheduled by a base station (eNB, Evolved NodeB) is a subframe, each subframe includes two time slots, and each time slot includes 7 symbols. For the scheduled UE, a subframe will include the physical downlink control channel (PDCCH, Physical Downlink Control Channel) of the user equipment (UE, User Equipment), and the PDCCH is carried in the first n symbols of a subframe, n can be one of 1, 2, and 3, or one of 2, 3, and 4 (for the case where the system bandwidth is 1.4 MHz). [0003] The PDCCH carries a downlink scheduling grant (DL_grant, Downlink_grant) or an uplink scheduling grant (UL_grant, Uplink_grant), which respectively carry scheduling information indicating a physical downlink shared channel (PDS...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04B7/06
CPCH04W72/046H04W72/12H04L5/0053H04L5/0051H04W72/0446H04W72/0453H04W72/23H04W72/542H04L5/001H04L5/0023H04L5/0055H04L5/0035H04B7/2603H04J11/0069
Inventor 官磊成艳
Owner HUAWEI TECH CO LTD
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