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Methods of two-stage scheduling in downlink control channel

A downlink and physical downlink technology, applied in the field of two-stage scheduling, can solve the problems of normative influence, poor forward compatibility of DCI, and poor hardware flexibility

Active Publication Date: 2018-07-31
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First, the DCI forward compatibility of this method is not good, because the size of DCI is specified
When a new feature is introduced and the DCI changes, it will have a greater normative impact on the determination of the DCI size and the behavior of UE blind detection (blind detection)
Second, the hardware flexibility of this method is not good, because for fast DCI decoding, the DCI size is usually encoded using hardware
Large hardware impact when new features are introduced and DCI changes

Method used

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  • Methods of two-stage scheduling in downlink control channel
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  • Methods of two-stage scheduling in downlink control channel

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Embodiment Construction

[0022] Reference will now be made in detail to some embodiments of the invention, the distances of which are illustrated in the accompanying drawings.

[0023] figure 1 It is a schematic diagram of a two-phase scheduling method in a downlink control channel in a mobile communication network according to a new aspect. A mobile communication network includes a serving base station eNB 101 and a plurality of UEs including UE 102 . In the LTE network, the PDCCH is used to transmit DL scheduling or UL scheduling indicating the transmission mode of PDSCH or PUSCH. The DL / UL scheduling information carried by the PDCCH is also called DCI. The DCI format is a predetermined format in which the DCI is formed and transmitted in the PDCCH. The DCI format gives the UE detailed information such as the number of resource blocks, resource allocation type, modulation scheme, transport block, redundancy version, code rate, etc. Different DCI formats are defined in LTE to support different t...

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Abstract

The application provides a method of two-stage scheduling in downlink control channel to enhance downlink control information (DCI) forward compatibility and hardware flexibility. The DCI comprises abasic DCI and an extended DCI. The basic DCI provides basic scheduling information of the scheduled data. The extended DCI provides extended scheduling information of the scheduled data channel. The basic DCI can be unicast to a single UE over UE-specific search space. The basic DCI can also be broadcast or multicast to a group of UEs over common search space. UE performs blind detection of the basic DCI only, while the location and size of the extended DCI can be provided by the basic DCI or provided by a higher layer signaling. Cross-slot / subframe and Multi-slot / subframe scheduling can alsobe applied in the two-stage scheduling.

Description

[0001] Cross References to Related Applications [0002] This application claims U.S. Provisional Patent Application No. 62 / 398,553, filed September 23, 2016, entitled "Two-Phase Scheduling Method in Downlink Control Channel" under 35 U.S.C. § 119, and the priority of U.S. Provisional Patent Application No. 62 / 417,377, filed November 4, 2016, entitled "Two-Phase Scheduling Method in Downlink Control Channel," which U.S. Provisional Patent Application It is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to wireless communication systems, and more particularly to two-phase scheduling in a downlink (DL) control channel. Background technique [0004] In the 3GPP long-term evolution (Long-Term Evolution, LTE) network, the evolved universal terrestrial radio access network (Universal Terrestrial Radio Access Network, E-UTRAN) includes multiple base stations (BaseStation, BS), for example, communicate with multiple mobile ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04W72/14
CPCH04W72/121H04L5/0053H04L1/0028H04L5/0094H04L1/0038H04W72/23H04L1/0039H04L5/0091H04L5/005H04W72/0446
Inventor 廖培凯廖怡茹
Owner MEDIATEK INC
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