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A Physical Resource Mapping Method and Device for a Physical Downlink Shared Channel

A technology of physical downlink sharing and physical resources, which is applied in the field of long-term technology evolution of the third generation mobile communication partnership project, can solve the problems of complex calculation and time-consuming resource mapping table, and achieve the goal of reducing calculation time and fast and seamless switching Effect

Active Publication Date: 2015-11-11
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Embodiments of the present invention provide a PDSCH physical resource mapping method and device to solve the problem of complex calculation of the PDSCH resource mapping table under different bandwidth conditions in the prior art, which takes a long time and cannot quickly complete the seamless switching of different bandwidth environments. question

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  • A Physical Resource Mapping Method and Device for a Physical Downlink Shared Channel
  • A Physical Resource Mapping Method and Device for a Physical Downlink Shared Channel
  • A Physical Resource Mapping Method and Device for a Physical Downlink Shared Channel

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Embodiment 1

[0033] like image 3 As shown, it is a schematic diagram of a PDSCH physical resource mapping method in Embodiment 1 of the present invention, and the method specifically includes the following steps:

[0034] Step 101: Determine downlink subframes and / or special subframes in the radio frame.

[0035]Step 102: For any subframe in the determined downlink subframe and / or special subframe, determine the mapping type of the subframe.

[0036] The subframes involved in the embodiments of the present invention refer to downlink subframes or special subframes in a radio frame.

[0037] Multiple types of channels or signals can be mapped in a subframe, but some channels or signals cannot be mapped in the same subframe at the same time. For example, PSS and SSS cannot be mapped in a subframe at the same time. Therefore, a subframe The combination of channel type and signal type to which a frame may be mapped is determinable.

[0038] In a downlink subframe or special subframe, the c...

Embodiment 2

[0081] Based on the same concept as the first embodiment of the present invention, the second embodiment of the present invention provides a PDSCH physical resource mapping apparatus, such as Figure 10 As shown, the PDSCH physical resource mapping device includes: a subframe determination module 11, a type determination module 12 and a physical resource determination module 13, wherein:

[0082] The subframe determination module 11 is configured to determine downlink subframes and / or special subframes in the radio frame.

[0083] The type determination module 12 is configured to, for any subframe determined by the subframe determination module 11, determine the mapping type of the subframe, and determine the channel type and signal type mapped in the subframe according to the mapping type.

[0084] The physical resource determination module 13 is configured to determine REs occupied by other channels and signals except PDSCH according to the channel type and signal type mappe...

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Abstract

The invention provides a method and device for mapping physical resource of a PDS CH (physical downlink shared channel). Main contents are as follows: a subframe area is divided into various mapping types according to differences of all channel types and signal types of a downlink subframe and / or a special subframe in a wireless frame, when mapped physical resource of PDS CH in a subframe is required to be determined at the aim of the subframe, channel types and signal types capable of being mapped therein are determined according to the mapping types of the subframe, after RE occupied by other channels and signals of the PSD CH are further removed, residual RE is the physical resource mapped by the PSD CH. According to the scheme of the invention, resource indication modes are not required to be considered and the method and the device can be applicable to various systems with different bandwidths, so that the resource mapping ways of PSD CH can be effectively simplified and unified, computing time at the aim of PDSCH resource mapping table is reduced, and further seamless switching in different bandwidth environment can be accomplished quickly.

Description

technical field [0001] The present invention relates to the third generation mobile communication partnership plan long term technology evolution (Third Generation Partner Plan Long Term Evolution, 3GPP LTE) mobile communication technical field, in particular to a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) physical resource mapping method and device. Background technique [0002] In the LTE mobile communication system, after precoding the PDSCH, it is necessary to map the PDSCH to a resource element (ResourceElement, RE), where the RE is composed of an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol in the time domain and It is composed of a subcarrier in the frequency domain. Since a resource block (ResourceBlock, RB) is the basic unit of resource scheduling of uplink / downlink physical channels in the LTE system, mapping the PDSCH to the RE also means mapping the PDSCH to the RE composed of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
Inventor 汪凡阮俊冰区洋
Owner COMBA TELECOM SYST CHINA LTD
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