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Resource allocation method and device for physical downlink control channel

A technology of control channel and group control channel, which is applied in the direction of transmission path sub-channel allocation, signaling allocation, allocation standards, etc., and can solve the problems of not improving the reliability of PDCCH transmission

Pending Publication Date: 2020-07-10
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] This application provides a resource allocation method and device for physical downlink control channels to solve the problem that the prior art does not improve the reliability of PDCCH transmission

Method used

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  • Resource allocation method and device for physical downlink control channel
  • Resource allocation method and device for physical downlink control channel
  • Resource allocation method and device for physical downlink control channel

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0109] like Figure 4 As shown, the PDCCH resource allocation method in Embodiment 1 of the present application includes the following steps:

[0110] Step S102, judging the relative positions of UEs in at least two adjacent cells;

[0111] Wherein, the method for judging the relative positions of UEs in at least two adjacent cells includes steps 11-12:

[0112] Step 11: For each cell, obtain the uplink signal strength of the UE in the cell measured by the cell from the eNB to which the cell belongs, and obtain the uplink signal strength of the UE in the cell adjacent to the cell measured by the cell signal strength;

[0113] Step 12: For each UE in each cell, judge the UE according to the UE's uplink signal strength measured in the current cell and the UE's uplink signal strength measured in S cells adjacent to the current cell The relative position of , where S is a positive integer greater than 0.

[0114]Specifically, it can be judged according to the following situati...

Embodiment 2

[0159] Regarding the method in the first embodiment above, the second embodiment of the present application provides a PDCCH resource allocation apparatus to which the method can be applied. like Figure 7 As shown, the following modules are included in the resource allocation device: a position judgment module 10, a calculation module 20 and a selection allocation module 30, wherein:

[0160] A position judging module 10, configured to judge the relative positions of UEs in at least two adjacent cells;

[0161] The calculation module 20 is used to determine the CCE aggregation level of the PDCCH of the UE for each UE, and calculate the UE-specific search space of the PDCCH of each subframe according to the CCE aggregation level of the PDCCH of the UE;

[0162] Selecting the allocation module 30, for when the position judgment module 10 judges that there are at least two UEs located in the overlapping coverage area of ​​the adjacent cell, and the at least two UEs belong to di...

Embodiment 3

[0178] Taking Embodiment 3 as an example, the method in Embodiment 1 will be described in detail. In this embodiment, cell a and cell b are adjacent cells.

[0179] The method in this embodiment three includes the following steps:

[0180] Step S202, the eNB sends the cell public parameters of cell a and cell b and the UE-specific parameters to the resource allocation device, wherein the cell public parameters are the cell physical identity (PCI); the UE-specific parameters are C-RNTI and UE uplink signal Unique attributes, for example, time-frequency position information of CQI or SRS (Sounding Reference Signal, sounding reference symbol), etc.

[0181] The sent information is specifically shown in Table 4 and Table 5:

[0182] Table 4: Cell public parameters of cell a and UE-specific parameters

[0183] Residential physical identification UE C-RNTI Unique attributes of UE uplink signals PCI a a x1

a x2

PCI a a y1

a y2

[0184] Ta...

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Abstract

Provided is a communication method, comprising: identifying a first physical downlink control channel (PDCCH) allocated to a first user equipment (UE) located in a central region of a first cell; andreceiving control information on the first PDCCH, wherein the first PDCCH in a UE-specific search space of the first UE in a subframe is configured with a first group of control channel elements (CCE); wherein a second PDCCH allocated to a second UE of a second cell adjacent to the first cell is configured with a second set of CCEs, the second UE being located in an edge region of the second cellor in an overlapping region of the first cell and the second cell.

Description

[0001] This application is a divisional application of an invention patent application with a filing date of December 11, 2013, a Chinese application number of 201310675091.4, and an invention title of "Resource Allocation Method and Device for a Physical Downlink Control Channel". technical field [0002] The present application relates to the technical field of wireless communication, and in particular to a resource allocation method and device for a physical downlink control channel. Background technique [0003] The downlink physical channels of LTE (Long Term Evolution, Long Term Evolution) are divided into traffic channels and control channels. Wherein, the traffic channel is a physical downlink shared channel (Physical Downlink Shared CHannel, PDSCH), which is used to transmit downlink data and system broadcast messages. Control channels include the following three types of channels: [0004] A physical downlink control channel (Physical Downlink Control CHannel, PDC...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/08H04B7/26H04L1/18H04L5/00
CPCH04B7/2656H04L5/0053H04L5/0073H04W72/23H04W72/542H04L1/1864H04W88/02
Inventor 任俊威刘伟施贞伟李迎阳
Owner BEIJING SAMSUNG TELECOM R&D CENT
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