Data transmission method, base station and user equipment

A technology for transmitting data and base stations, which is applied in the field of communication and can solve the problems of high control information overhead of time-frequency resources

Pending Publication Date: 2021-01-29
HUAWEI TECH CO LTD
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  • Claims
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Problems solved by technology

[0007] In view of this, the embodiments of the present invention provide a data transmission method, base station and user equipment, by planning the time-frequency resources occupied by the control channel and the time-frequency resources occupied by the corresponding data channel, the data transmission process is solved. The problem that the control information overhead used to indicate the time-frequency resources of the data channel is too large

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  • Data transmission method, base station and user equipment
  • Data transmission method, base station and user equipment
  • Data transmission method, base station and user equipment

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Embodiment Construction

[0097] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0098] It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example: Global System of Mobile communication (Global System of Mobile communication, referred to as "GSM") system, Code Division Multiple Access (Code Division Multiple Access, referred to as "GSM") system CDMA") system, Wideband Code Division Multiple Access (referred to as "WCDMA") system, General P...

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Abstract

The invention provides a data transmission method, comprising: a base station determines a current time period in which an end moment of a current control channel is located within a first transmission time interval TTI, the first TTI comprising at least two time periods, wherein the starting moments of the data channels corresponding to the control channels ending in each of the at least two timeperiods are located at different TTIs respectively; the base station sends control information carried by the current control channel to user equipment on the first TTI, wherein the control information is used for scheduling a current data channel corresponding to the current control channel; the base station determines a second TTI where the starting moment of the current data channel is located; and the base station performs data interaction of the current data channel with the user equipment on the second TTI. Therefore, according to the method provided by the invention, the overhead of the control information for indicating the time-frequency resources is reduced by regularly dividing the time-frequency resources in the system.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data transmission method, base station and user equipment in the communication field. Background technique [0002] In the existing Long Term Evolution ("LTE") system, the downlink control channel includes a physical downlink control channel (Physical Downlink Control Channel, "PDCCH" for short) and an enhanced physical downlink control channel (Enhanced PDCCH, "PDCCH" for short). EPDCCH") two types of channels. The time-frequency resource occupied by the PDCCH channel is in the first 1 to 4 symbols of a Transmission Time Interval (Transmission Time Interval, referred to as "TTI"), through the physical control format indicator channel (Physical Control Format Indicator Channel, referred to as "PCFICH") channel Or high-level signaling information is determined and occupies the entire system bandwidth. However, the time-frequency resources occupied by the EPDCCH channel occupy...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/12
CPCH04W72/1263H04W72/12H04W72/20H04W72/0446H04W72/23H04W72/044
Inventor 花梦胡文权焦淑蓉
Owner HUAWEI TECH CO LTD
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