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Method and device for performing resource mapping to E-PDCCHs (enhanced-physical downlink control channels)

An E-PODCCH and resource mapping technology, applied in electrical components, wireless communication, etc., can solve the problems of inflexible and practical configuration, and achieve the effect of improving flexibility and practicability, and improving resource utilization

Active Publication Date: 2012-08-15
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0015] For the localized transmission mode of E-PDCCH, the above possible E-PDCCH resource definitions are always defined based on the way that a PRB pair contains an integer number of E-CCEs, and the E-REG in a PRB pair is only used for localized E-PDCCH transmission mode, or, E-REG in a PRB pair is only used to transmit E-PDCCH in distributed mode, the configuration of E-PDCCH resource mapping in PRB pair is not flexible and practical

Method used

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  • Method and device for performing resource mapping to E-PDCCHs (enhanced-physical downlink control channels)
  • Method and device for performing resource mapping to E-PDCCHs (enhanced-physical downlink control channels)
  • Method and device for performing resource mapping to E-PDCCHs (enhanced-physical downlink control channels)

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Embodiment Construction

[0045] The present invention provides a method for network side equipment to perform resource mapping on E-PDCCH.

[0046] Wherein, the time-frequency resource configured by the network side device for the terminal to transmit the E-PDCCH includes at least one PRB pair, and the at least one PRB pair includes an E-REG for continuous transmission of the E-PDCCH in the frequency domain, and an E-REG for The E-REG for discontinuously transmitting the E-PDCCH in the frequency domain is referred to as a type A PRB pair hereinafter. The aforementioned network-side device may be a base station, or a relay, and so on. The network-side device sends the above-mentioned time-frequency resources configured for the terminal to the corresponding terminal through high-level signaling; or, the network-side device and the terminal configure time-frequency resources for E-PDCCH transmitted to the terminal in a pre-agreed manner.

[0047] Specifically, in the type A PRB pair, the E-REGs other th...

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Abstract

The invention discloses a method and a device for performing resource mapping to E-PDCCHs (enhanced-physical downlink control channels). At least one PRB (physical resource block) is included in time-frequency resources which are configured for a terminal and used for transmitting time-frequency resources of the E-PDCCHs, and E-REGs (enhanced-resource element group) used for performing frequency-domain localized transmission of E-PDCCHs and E-REGs used for performing frequency-domain distributed transmission of E-PDCCHs are included in the PRB pairs. The method includes mapping the E-PDDCHs needed to be subjected to the frequency-domain localized transmission to the E-REGs used for performing the frequency-domain localized transmission of E-PDCCHs; and mapping the E-PDDCHs needed to be subjected to the frequency-domain distributed transmission to the E-REGs used for performing the frequency-domain distributed transmission of E-PDCCHs. By the method and the device for performing resource mapping to the E-PDCCHs, definition of one PRB pair is not only limited to one transmission mode, flexibility and practicality of the resource mapping are improved, and resource utilization rate is improved effectively.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for resource mapping in E-PDCCH. Background technique [0002] In the LTE Rel-8 / 9 / 10 (Long Term Evolution Rel-8 / 9 / 10, long-term evolution version 8 / 9 / 10) system, PDCCH (Physical Downlink Control Channel, physical downlink control channel) The transmission is performed in a frame, which occupies the first N OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbols of a wireless subframe for transmission. Among them, the possible values ​​of N are 1, 2, 3, 4, and N=4 is only allowed to appear in a system with a system bandwidth of 1.4 MHz. Here, the first N OFDM symbols are called "traditional PDCCH region". [0003] In the LTE Rel-8 / 9 / 10 system, the multiplexing relationship between the control region and the data region in a downlink subframe is as follows: figure 1 shown. Wherein, the control region for transmit...

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Application Information

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IPC IPC(8): H04W72/04
Inventor 赵锐潘学明拉盖施张然然
Owner DATANG MOBILE COMM EQUIP CO LTD
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