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An enhanced control channel element e-cce resource mapping method and device

A technology for enhanced control channel and resource mapping, which is applied in the field of enhanced control channel unit E-CCE resource mapping and equipment, and can solve problems such as reduced system performance, inability to receive and decode correctly, etc.

Active Publication Date: 2017-12-22
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The embodiment of the present invention provides an E-CCE resource mapping method and equipment, which is used to solve the problem that the terminal in the prior art cannot receive and decode the E-PDCCH correctly without receiving additional signaling notification, thereby reducing the system performance problem

Method used

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  • An enhanced control channel element e-cce resource mapping method and device
  • An enhanced control channel element e-cce resource mapping method and device
  • An enhanced control channel element e-cce resource mapping method and device

Examples

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Embodiment 1

[0082] Such as figure 2 As shown, it is a schematic flow chart of the E-CCE resource mapping method described in Embodiment 1 of the present invention, and the method includes:

[0083] Step 101: For any PRB part in each downlink subframe, determine the REs in the non-control domain of the PRB part that are not occupied by the existing pilots of the PRB part.

[0084] Specifically, the existing pilots in the PRB part of the downlink subframe include at least common pilots (CRS port0, 1, 2, 3) with ports 0, 1, 2, or 3, and demodulation references with ports 7 or 8. signal (DMRS port7,8) and channel state information reference signal (Channel State Information Reference Signal, CSI-RS), further, the existing pilot in the PRB part of the downlink subframe can also optionally include the port as 9 or 10 demodulation reference signal (DMRS port9,10) and / or PSS / SSS, wherein the REs occupied by CRS port0,1,2,3 in the PRB part of the downlink subframe are according to v shift The v...

Embodiment 2

[0183] Such as Figure 11 As shown, it is a schematic structural diagram of the E-CCE resource mapping device described in Embodiment 2 of the present invention. The E-CCE resource mapping device includes a determination module 11 and an execution module 12, wherein:

[0184] The determining module 11 is used for determining, for any PRB part in each downlink subframe, REs in the non-control domain of the PRB part that are not occupied by the existing pilots of the PRB part; specifically, the downlink subframe The existing pilots in the PRB part include at least CRS port0, 1, 2, 3, DMRS port7, 8, and CSI-RS, and the existing pilots can optionally include any one or more of the following pilots: DMRS port9,10 and PSS / SSS, wherein the REs occupied by CRS port0,1,2,3 in the PRBpart of the downlink subframe are based on v shift The value determined when the v shift When the value of is different, the REs occupied by the CRS port0, 1, 2, and 3 are also different. shift The value...

Embodiment 3

[0256] Embodiment 3 of the present invention provides a method for receiving E-PDCCH, which can be applied in the scenario of receiving the E-PDCCH carried by the E-CCE described in Embodiment 1. The method includes:

[0257] Step 1: Determine v according to the received PSS / SSS shift , and according to the determined v shift Determine the RE occupied by the E-CCE bearing the E-PDCCH;

[0258] Specifically, the terminal maintains frame synchronization with the system by receiving the PSS / SSS signal, and determines v according to the received PSS / SSS signal sequence shift value, and according to the composition method of the E-CCE carrying the E-PDCCH (any one of composition method 1 to composition method 5), the OFDM symbols actually occupied by the PDCCH, and the received v shiftThe value of , to determine the RE occupied by the E-CCE carrying the E-PDCCH, where the OFDM symbols actually occupied by the PDCCH can be the first 0 OFDM symbols, the first 1 OFDM symbol, the fir...

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Abstract

The present invention discloses an enhanced control channel element (E-CCE) resource mapping method and equipment, the method includes: for any PRB part in each downlink subframe, determine the non-control region of the PRB part Resource unit REs occupied by existing pilots of the PRB part, and multiple REs are selected from the determined REs as E-CCEs of the downlink subframe. Because in the scheme of the present invention, the REs occupied by the E-CCE do not overlap with the REs occupied by the existing pilots of the PRB part where the E-CCE is located, thus solving the problem existing in the prior art due to the E-CCE There is a problem that the terminal cannot correctly receive and decode the enhanced physical downlink control channel without receiving additional signaling notification due to RE overlap with the existing pilot.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a resource of an Enhanced-Control Channel Element (E-CCE) used for transmitting an Enhanced-Physical Downlink Control Channel (Enhanced-Physical Downlink Control Channel, E-PDCCH) In addition, the present invention also relates to a method and equipment for receiving E-PDCCH. Background technique [0002] In a Long Term Evolution (LTE) Rel-8 / 9 / 10 system, a Physical Downlink Control Channel (PDCCH) is transmitted in each wireless downlink subframe, and the PDCCH usually occupies every The first 0 to 3 Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols of a downlink subframe, wherein the OFDM symbols actually occupied by the PDCCH (can be the first 0 OFDM symbols, the first 1 OFDM symbols , the first 2 OFDM symbols or the first 3 OFDM symbols) may be referred to as a control field. [0003] At present, in o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
Inventor 沈晓冬史志华胡丽洁王锐
Owner CHINA MOBILE COMM GRP CO LTD