Method, system and equipment for transmitting data

A technology for equipment and user equipment, which is applied in the field of data transmission and can solve the problem that the enhanced PDCCH cannot continue to use the configuration method.

Active Publication Date: 2011-08-24
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0028] In summary, the enhanced PDCCH cannot follow the configuration met

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  • Method, system and equipment for transmitting data
  • Method, system and equipment for transmitting data
  • Method, system and equipment for transmitting data

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Embodiment Construction

[0053] The inventor found that during the Relay design process, since the DL grant and the UL grant are separated in time slots, the number of blind detections in one time slot is the same as that of the UE in Rel-8 / 10, but in a sub- In the frame, the number of blind detection times exceeds that of ordinary terminals. Considering that the complexity of the Relay is higher than that of the UE, it is acceptable for the Relay to stagger the maximum number of blind detection times in different time slots. However, additional complexity will be added to the UE. At the same time, considering that DL grant: DCI format 1A and UL grant: DCI format 0 have the same number of information bits, if the blind detection of these two DCI formats is performed separately, the efficiency of UE blind detection will be reduced.

[0054] In the embodiment of the present invention, the network side configures the transmission information of the enhanced PDCCH and / or the channel resources of the cand...

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Abstract

The embodiment of the invention relates to the technical field of wireless communications, in particular to a method, a system and equipment for transmitting data, which are used for transmitting data through enhanced physical downlink control channel (PDCCH). The method for transmitting data comprises the following steps that: a network side configures transmission information of the enhanced PDCCH and/or channel resources of a candidate PDCCH, wherein the frequency of blind test of the PDCCH in a configured PDCCH search space is not higher than that of the PDCCH in a dedicated PDCCH search space of user equipment; and the network side transmits data through the configured PDCCH. Because the frequency of blind test of the PDCCH in the configured PDCCH search space is not higher than that of the PDCCH in the dedicated PDCCH search space of the user equipment, the frequency of blind test of the PDCCH, and the complexity of implementing the user equipment can be further reduced effectively on the basis of the enhanced PDCCH.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a data transmission method, system and equipment. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution) system, PDCCH (physical downlink control channel, physical downlink control channel) is sent in each radio subframe, and forms TDM (Time Division Multiple, time division multiplexing) with downlink data PDSCH ) reuse relationship. [0003] The control region for transmitting the PDCCH in the LTE system is composed of logically divided CCEs (Control Channel Elements, Control Channel Elements), where the mapping from CCEs to REs (Resource Elements, Resource Elements) adopts a completely interleaved manner. The transmission of DCI (Downlink Control Information, downlink control information) is also based on the unit of CCE. One DCI for one UE (user equipment) can be sent in N consecutive CCEs. In the LTE system, the possible va...

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Application Information

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IPC IPC(8): H04W72/04
CPCH04W72/04H04W72/00
Inventor 赵锐潘学明沈祖康肖国军
Owner DATANG MOBILE COMM EQUIP CO LTD
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