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Method and equipment for determining downlink control information

A technology for controlling information and user equipment, applied in wireless communication, signaling distribution, devices dedicated to receivers, etc.

Active Publication Date: 2019-11-19
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] An object of the embodiments of the present invention is to provide a method and device for determining downlink control information to solve the problem of how to determine the DCI size budget

Method used

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  • Method and equipment for determining downlink control information
  • Method and equipment for determining downlink control information
  • Method and equipment for determining downlink control information

Examples

Experimental program
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Effect test

example 1

[0143] The DCI size budget of the UE in one slot on the PCell is 4, and SCell information is scheduled across carriers on the PCell.

[0144] If 7 SCells are configured, the DCI size budget of the PCell increases by 4 for each additional SCell, then the DCI size budget of the PCell=4+4×7=32, see Figure 7 .

example 2

[0146] The DCI size budget of the UE in one slot on the PCell is 4, and SCell information is scheduled across carriers on the PCell.

[0147] When the number of SCells configured with cross-carrier scheduling is greater than 4, the DCI size budget increases non-linearly. The number of increases is smaller than that in the case of linear growth.

[0148] When the base station configures 2 SCells for the UE, the DCI size budget of the cell (PCell) carrying the cross-carrier scheduling DCI increases by 2 sizes for each SCell configured by the base station. The DCI size budget of the UE on the PCell is 4+2×2=8.

[0149] When the base station configures 7 SCell(s) for the UE, the UE can add up to 4 SCell DCI sizes on the PCell, which is 2×4=8 DCI sizes. The DCI size budget of the UE in a slot is 4+8=12, see Figure 8 with Figure 9 .

example 3

[0151] The base station configures the SCell for the UE, and the PCell bears the DCI of the SCell cross-carrier scheduling. When the DCI size budget is not enough, the DCI sizes carried on the same cell are aligned, including: DCI size alignment for self-scheduling and DCI size alignment for cross-carrier scheduling:

[0152] (1) The DCI size of DCI format 0-0 or DCI format 1-0 in the USS in the PCell is aligned with the DCI size of DCI format 0-0 or DCI format 1-0 in the CSS.

[0153] (2) If the DCI size budget is still insufficient, align the fallback DCI size in the USS:

[0154] a) The DCI sizes of the self-scheduled and cross-carrier scheduled DCI format 0_1 ​​in the USS are aligned;

[0155] b) The DCI sizes of self-scheduled and cross-carrier scheduled DCI format 1_1 in the USS are aligned.

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Abstract

Provided are a method and a device for determining downlink control information. The method comprises: determining a first number of SCells or a second number of SCells scheduled across carriers; determining a third number of DCI size budget of self-scheduling of a scheduling service cell, wherein the scheduling service cell is a cell bearing DCI of cross-carrier scheduling of a scheduled cell andDCI of self-scheduling of the cell; determining a fourth number of increased DCI size budget of the scheduling service cell according to the first number or the second number; and determining the DCIsize budget of the scheduling service cell according to the third number and the fourth number. In the method of the present invention, a DCI size budget can be determined in a CA scenario, so that aUE can obtain a corresponding DCI size, and blind detection is performed on a self-scheduled DCI format and a cross-carrier scheduled DCI format in a scheduling serving cell.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular to a method and device for determining downlink control information (Downlink Control Information, DCI) in a carrier aggregation (CarrierAggregation, CA) scenario. Background technique [0002] With the development of mobile communication technology, more and more technologies for improving communication efficiency have been introduced. E.g: [0003] 1. About carrier aggregation: [0004] In the carrier aggregation scenario, the user equipment (User Equipment, UE) can be configured with one primary cell PCell (Primary Cell, PCell), multiple secondary cells (Secondary Cell, SCell), and the new radio (New Radio, NR) can support up to Carrier aggregation of 16 cells. [0005] If the SCell is a self-scheduling cell, both control information and data information are transmitted on the SCell, see figure 1 . If the SCell is configured for cross-carri...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04L5/00
CPCH04L5/0053H04L1/003H04L1/0038
Inventor 彭淑燕纪子超
Owner VIVO MOBILE COMM CO LTD
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